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freeswitch/libs/spandsp/tests/fax_tester.c

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/*
* SpanDSP - a series of DSP components for telephony
*
* fax_tester.c
*
* Written by Steve Underwood <steveu@coppice.org>
*
* Copyright (C) 2008 Steve Underwood
*
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2, as
* published by the Free Software Foundation.
*
* 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 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.
*/
/*! \file */
#if defined(HAVE_CONFIG_H)
#include "config.h"
#endif
#include <inttypes.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#if defined(HAVE_TGMATH_H)
#include <tgmath.h>
#endif
#if defined(HAVE_MATH_H)
#include <math.h>
#endif
#include "floating_fudge.h"
#include <assert.h>
#include <fcntl.h>
#include <time.h>
#include <unistd.h>
#if defined(HAVE_LIBXML_XMLMEMORY_H)
#include <libxml/xmlmemory.h>
#endif
#if defined(HAVE_LIBXML_PARSER_H)
#include <libxml/parser.h>
#endif
#if defined(HAVE_LIBXML_XINCLUDE_H)
#include <libxml/xinclude.h>
#endif
//#if defined(WITH_SPANDSP_INTERNALS)
#define SPANDSP_EXPOSE_INTERNAL_STRUCTURES
//#endif
#include "spandsp.h"
#include "fax_tester.h"
#define HDLC_FRAMING_OK_THRESHOLD 5
static void timer_update(faxtester_state_t *s, int len)
{
s->timer += len;
if (s->timer > s->timeout)
{
s->timeout = 0x7FFFFFFFFFFFFFFFLL;
if (s->front_end_step_timeout_handler)
s->front_end_step_timeout_handler(s, s->front_end_step_timeout_user_data);
}
}
/*- End of function --------------------------------------------------------*/
static void front_end_step_complete(faxtester_state_t *s)
{
if (s->front_end_step_complete_handler)
s->front_end_step_complete_handler(s, s->front_end_step_complete_user_data);
}
/*- End of function --------------------------------------------------------*/
void faxtester_send_hdlc_flags(faxtester_state_t *s, int flags)
{
hdlc_tx_flags(&(s->modems.hdlc_tx), flags);
}
/*- End of function --------------------------------------------------------*/
void faxtester_send_hdlc_msg(faxtester_state_t *s, const uint8_t *msg, int len, int crc_ok)
{
hdlc_tx_frame(&(s->modems.hdlc_tx), msg, len);
if (!crc_ok)
hdlc_tx_corrupt_frame(&(s->modems.hdlc_tx));
}
/*- End of function --------------------------------------------------------*/
static void hdlc_underflow_handler(void *user_data)
{
faxtester_state_t *s;
uint8_t buf[400];
s = (faxtester_state_t *) user_data;
if (s->image_buffer)
{
/* We are sending an ECM image */
if (s->image_ptr < s->image_len)
{
buf[0] = 0xFF;
buf[1] = 0x03;
buf[2] = 0x06;
buf[3] = s->image_ptr/s->ecm_frame_size;
memcpy(buf + 4, &s->image_buffer[s->image_ptr], s->ecm_frame_size);
hdlc_tx_frame(&(s->modems.hdlc_tx), buf, 4 + s->ecm_frame_size);
if (s->corrupt_crc >= 0 && s->corrupt_crc == s->image_ptr/s->ecm_frame_size)
hdlc_tx_corrupt_frame(&(s->modems.hdlc_tx));
s->image_ptr += s->ecm_frame_size;
return;
}
else
{
/* The actual image is over. We are sending the final RCP frames. */
if (s->image_bit_ptr > 2)
{
s->image_bit_ptr--;
buf[0] = 0xFF;
buf[1] = 0x03;
buf[2] = 0x86;
hdlc_tx_frame(&(s->modems.hdlc_tx), buf, 3);
return;
}
else
{
/* All done. */
s->image_buffer = NULL;
}
}
}
front_end_step_complete(s);
}
/*- End of function --------------------------------------------------------*/
static void modem_tx_status(void *user_data, int status)
{
faxtester_state_t *s;
s = (faxtester_state_t *) user_data;
printf("Tx status is %s (%d)\n", signal_status_to_str(status), status);
switch (status)
{
case SIG_STATUS_SHUTDOWN_COMPLETE:
front_end_step_complete(s);
break;
}
}
/*- End of function --------------------------------------------------------*/
static void tone_detected(void *user_data, int tone, int level, int delay)
{
faxtester_state_t *s;
s = (faxtester_state_t *) user_data;
span_log(&s->logging,
SPAN_LOG_FLOW,
"%s (%d) declared (%ddBm0)\n",
modem_connect_tone_to_str(tone),
tone,
level);
if (tone != MODEM_CONNECT_TONES_NONE)
{
s->tone_on_time = s->timer;
}
else
{
span_log(&s->logging,
SPAN_LOG_FLOW,
"Tone was on for %fs\n",
(float) (s->timer - s->tone_on_time)/SAMPLE_RATE + 0.55);
}
s->tone_state = tone;
if (tone == MODEM_CONNECT_TONES_NONE)
front_end_step_complete(s);
}
/*- End of function --------------------------------------------------------*/
static int non_ecm_get_bit(void *user_data)
{
faxtester_state_t *s;
int bit;
s = (faxtester_state_t *) user_data;
if (s->image_bit_ptr == 0)
{
if (s->image_ptr >= s->image_len)
{
s->image_buffer = NULL;
return SIG_STATUS_END_OF_DATA;
}
s->image_bit_ptr = 8;
s->image_ptr++;
}
s->image_bit_ptr--;
bit = (s->image_buffer[s->image_ptr] >> (7 - s->image_bit_ptr)) & 0x01;
//printf("Rx bit - %d\n", bit);
return bit;
}
/*- End of function --------------------------------------------------------*/
void faxtester_set_non_ecm_image_buffer(faxtester_state_t *s, const uint8_t *buf, int len)
{
s->image_ptr = 0;
s->image_bit_ptr = 8;
s->image_len = len;
s->image_buffer = buf;
}
/*- End of function --------------------------------------------------------*/
void faxtester_set_ecm_image_buffer(faxtester_state_t *s, const uint8_t *buf, int len, int block, int frame_size, int crc_hit)
{
int start;
start = 256*frame_size*block;
if (len > start + 256*frame_size)
len = start + 256*frame_size;
s->ecm_frame_size = frame_size;
s->image_ptr = start;
s->image_bit_ptr = 8;
s->image_len = len;
s->image_buffer = buf;
s->corrupt_crc = crc_hit;
/* Send the first frame */
hdlc_underflow_handler(s);
}
/*- End of function --------------------------------------------------------*/
static void non_ecm_rx_status(void *user_data, int status)
{
faxtester_state_t *s;
s = (faxtester_state_t *) user_data;
span_log(&s->logging, SPAN_LOG_FLOW, "Non-ECM carrier status is %s (%d)\n", signal_status_to_str(status), status);
switch (status)
{
case SIG_STATUS_TRAINING_FAILED:
s->modems.rx_trained = FALSE;
break;
case SIG_STATUS_TRAINING_SUCCEEDED:
/* The modem is now trained */
s->modems.rx_trained = TRUE;
break;
case SIG_STATUS_CARRIER_UP:
s->modems.rx_signal_present = TRUE;
break;
case SIG_STATUS_CARRIER_DOWN:
if (s->modems.rx_trained)
{
if (s->real_time_frame_handler)
s->real_time_frame_handler(s, s->real_time_frame_user_data, TRUE, NULL, 0);
}
s->modems.rx_signal_present = FALSE;
s->modems.rx_trained = FALSE;
break;
}
}
/*- End of function --------------------------------------------------------*/
static void non_ecm_put_bit(void *user_data, int bit)
{
faxtester_state_t *s;
if (bit < 0)
{
non_ecm_rx_status(user_data, bit);
return;
}
s = (faxtester_state_t *) user_data;
}
/*- End of function --------------------------------------------------------*/
static void hdlc_rx_status(void *user_data, int status)
{
faxtester_state_t *s;
s = (faxtester_state_t *) user_data;
fprintf(stderr, "HDLC carrier status is %s (%d)\n", signal_status_to_str(status), status);
switch (status)
{
case SIG_STATUS_TRAINING_FAILED:
s->modems.rx_trained = FALSE;
break;
case SIG_STATUS_TRAINING_SUCCEEDED:
/* The modem is now trained */
s->modems.rx_trained = TRUE;
break;
case SIG_STATUS_CARRIER_UP:
s->modems.rx_signal_present = TRUE;
break;
case SIG_STATUS_CARRIER_DOWN:
s->modems.rx_signal_present = FALSE;
s->modems.rx_trained = FALSE;
break;
}
}
/*- End of function --------------------------------------------------------*/
static void hdlc_accept(void *user_data, const uint8_t *msg, int len, int ok)
{
faxtester_state_t *s;
if (len < 0)
{
hdlc_rx_status(user_data, len);
return;
}
s = (faxtester_state_t *) user_data;
if (s->real_time_frame_handler)
s->real_time_frame_handler(s, s->real_time_frame_user_data, TRUE, msg, len);
}
/*- End of function --------------------------------------------------------*/
static int v17_v21_rx(void *user_data, const int16_t amp[], int len)
{
faxtester_state_t *t;
fax_modems_state_t *s;
t = (faxtester_state_t *) user_data;
s = &t->modems;
v17_rx(&s->fast_modems.v17_rx, amp, len);
fsk_rx(&s->v21_rx, amp, len);
if (s->rx_trained)
{
/* The fast modem has trained, so we no longer need to run the slow
one in parallel. */
span_log(&t->logging, SPAN_LOG_FLOW, "Switching from V.17 + V.21 to V.17 (%.2fdBm0)\n", v17_rx_signal_power(&s->fast_modems.v17_rx));
s->rx_handler = (span_rx_handler_t *) &v17_rx;
s->rx_user_data = &s->fast_modems.v17_rx;
}
return 0;
}
/*- End of function --------------------------------------------------------*/
static int v27ter_v21_rx(void *user_data, const int16_t amp[], int len)
{
faxtester_state_t *t;
fax_modems_state_t *s;
t = (faxtester_state_t *) user_data;
s = &t->modems;
v27ter_rx(&s->fast_modems.v27ter_rx, amp, len);
fsk_rx(&s->v21_rx, amp, len);
if (s->rx_trained)
{
/* The fast modem has trained, so we no longer need to run the slow
one in parallel. */
span_log(&t->logging, SPAN_LOG_FLOW, "Switching from V.27ter + V.21 to V.27ter (%.2fdBm0)\n", v27ter_rx_signal_power(&s->fast_modems.v27ter_rx));
s->rx_handler = (span_rx_handler_t *) &v27ter_rx;
s->rx_user_data = &s->fast_modems.v27ter_rx;
}
return 0;
}
/*- End of function --------------------------------------------------------*/
static int v29_v21_rx(void *user_data, const int16_t amp[], int len)
{
faxtester_state_t *t;
fax_modems_state_t *s;
t = (faxtester_state_t *) user_data;
s = &t->modems;
v29_rx(&s->fast_modems.v29_rx, amp, len);
fsk_rx(&s->v21_rx, amp, len);
if (s->rx_trained)
{
/* The fast modem has trained, so we no longer need to run the slow
one in parallel. */
span_log(&t->logging, SPAN_LOG_FLOW, "Switching from V.29 + V.21 to V.29 (%.2fdBm0)\n", v29_rx_signal_power(&s->fast_modems.v29_rx));
s->rx_handler = (span_rx_handler_t *) &v29_rx;
s->rx_user_data = &s->fast_modems.v29_rx;
}
return 0;
}
/*- End of function --------------------------------------------------------*/
int faxtester_rx(faxtester_state_t *s, int16_t *amp, int len)
{
int i;
for (i = 0; i < len; i++)
amp[i] = dc_restore(&(s->modems.dc_restore), amp[i]);
s->modems.rx_handler(s->modems.rx_user_data, amp, len);
timer_update(s, len);
if (s->wait_for_silence)
{
if (!s->modems.rx_signal_present)
{
s->wait_for_silence = FALSE;
front_end_step_complete(s);
}
}
return 0;
}
/*- End of function --------------------------------------------------------*/
int faxtester_tx(faxtester_state_t *s, int16_t *amp, int max_len)
{
int len;
int required_len;
required_len = max_len;
len = 0;
if (s->transmit)
{
while ((len += s->modems.tx_handler(s->modems.tx_user_data, amp + len, max_len - len)) < max_len)
{
/* Allow for a change of tx handler within a block */
front_end_step_complete(s);
if (!s->transmit)
{
if (s->modems.transmit_on_idle)
{
/* Pad to the requested length with silence */
memset(amp + len, 0, (max_len - len)*sizeof(int16_t));
len = max_len;
}
break;
}
}
}
else
{
if (s->modems.transmit_on_idle)
{
/* Pad to the requested length with silence */
memset(amp, 0, max_len*sizeof(int16_t));
len = max_len;
}
}
return len;
}
/*- End of function --------------------------------------------------------*/
void faxtest_set_rx_silence(faxtester_state_t *s)
{
s->wait_for_silence = TRUE;
}
/*- End of function --------------------------------------------------------*/
void faxtester_set_rx_type(void *user_data, int type, int bit_rate, int short_train, int use_hdlc)
{
faxtester_state_t *s;
put_bit_func_t put_bit_func;
void *put_bit_user_data;
fax_modems_state_t *t;
int tone;
s = (faxtester_state_t *) user_data;
t = &s->modems;
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 *) &t->hdlc_rx;
hdlc_rx_init(&t->hdlc_rx, FALSE, FALSE, HDLC_FRAMING_OK_THRESHOLD, hdlc_accept, s);
}
else
{
put_bit_func = non_ecm_put_bit;
put_bit_user_data = (void *) s;
}
switch (type)
{
case T30_MODEM_CED:
case T30_MODEM_CNG:
if (type == T30_MODEM_CED)
tone = MODEM_CONNECT_TONES_FAX_CED;
else
tone = MODEM_CONNECT_TONES_FAX_CNG;
modem_connect_tones_rx_init(&t->connect_rx,
tone,
tone_detected,
(void *) s);
t->rx_handler = (span_rx_handler_t *) &modem_connect_tones_rx;
t->rx_user_data = &t->connect_rx;
s->tone_state = MODEM_CONNECT_TONES_NONE;
break;
case T30_MODEM_V21:
if (s->flush_handler)
s->flush_handler(s, s->flush_user_data, 3);
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, -45.5);
t->rx_handler = (span_rx_handler_t *) &fsk_rx;
t->rx_user_data = &t->v21_rx;
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);
t->rx_handler = (span_rx_handler_t *) &v27ter_v21_rx;
t->rx_user_data = 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);
t->rx_handler = (span_rx_handler_t *) &v29_v21_rx;
t->rx_user_data = s;
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);
t->rx_handler = (span_rx_handler_t *) &v17_v21_rx;
t->rx_user_data = s;
break;
case T30_MODEM_DONE:
span_log(&s->logging, SPAN_LOG_FLOW, "FAX exchange complete\n");
default:
t->rx_handler = (span_rx_handler_t *) &span_dummy_rx;
t->rx_user_data = s;
break;
}
}
/*- End of function --------------------------------------------------------*/
void faxtester_set_tx_type(void *user_data, int type, int bit_rate, int short_train, int use_hdlc)
{
faxtester_state_t *s;
get_bit_func_t get_bit_func;
void *get_bit_user_data;
fax_modems_state_t *t;
int tone;
s = (faxtester_state_t *) user_data;
t = &s->modems;
span_log(&s->logging, SPAN_LOG_FLOW, "Set tx type %d\n", type);
if (s->current_tx_type == type)
return;
if (use_hdlc)
{
get_bit_func = (get_bit_func_t) hdlc_tx_get_bit;
get_bit_user_data = (void *) &t->hdlc_tx;
}
else
{
get_bit_func = non_ecm_get_bit;
get_bit_user_data = (void *) s;
}
switch (type)
{
case T30_MODEM_PAUSE:
silence_gen_alter(&t->silence_gen, ms_to_samples(short_train));
t->tx_handler = (span_tx_handler_t *) &silence_gen;
t->tx_user_data = &t->silence_gen;
s->transmit = TRUE;
break;
case T30_MODEM_CED:
case T30_MODEM_CNG:
if (type == T30_MODEM_CED)
tone = MODEM_CONNECT_TONES_FAX_CED;
else
tone = MODEM_CONNECT_TONES_FAX_CNG;
modem_connect_tones_tx_init(&t->connect_tx, tone);
t->tx_handler = (span_tx_handler_t *) &modem_connect_tones_tx;
t->tx_user_data = &t->connect_tx;
s->transmit = TRUE;
break;
case T30_MODEM_V21:
fsk_tx_init(&t->v21_tx, &preset_fsk_specs[FSK_V21CH2], get_bit_func, get_bit_user_data);
fsk_tx_set_modem_status_handler(&t->v21_tx, modem_tx_status, (void *) s);
t->tx_handler = (span_tx_handler_t *) &fsk_tx;
t->tx_user_data = &t->v21_tx;
s->transmit = TRUE;
break;
case T30_MODEM_V27TER:
v27ter_tx_restart(&t->fast_modems.v27ter_tx, bit_rate, t->use_tep);
v27ter_tx_set_get_bit(&t->fast_modems.v27ter_tx, get_bit_func, get_bit_user_data);
v27ter_tx_set_modem_status_handler(&t->fast_modems.v27ter_tx, modem_tx_status, (void *) s);
t->tx_handler = (span_tx_handler_t *) &v27ter_tx;
t->tx_user_data = &t->fast_modems.v27ter_tx;
/* For any fast modem, set 200ms of preamble flags */
hdlc_tx_flags(&t->hdlc_tx, bit_rate/(8*5));
s->transmit = TRUE;
break;
case T30_MODEM_V29:
v29_tx_restart(&t->fast_modems.v29_tx, bit_rate, t->use_tep);
v29_tx_set_get_bit(&t->fast_modems.v29_tx, get_bit_func, get_bit_user_data);
v29_tx_set_modem_status_handler(&t->fast_modems.v29_tx, modem_tx_status, (void *) s);
t->tx_handler = (span_tx_handler_t *) &v29_tx;
t->tx_user_data = &t->fast_modems.v29_tx;
/* For any fast modem, set 200ms of preamble flags */
hdlc_tx_flags(&t->hdlc_tx, bit_rate/(8*5));
s->transmit = TRUE;
break;
case T30_MODEM_V17:
v17_tx_restart(&t->fast_modems.v17_tx, bit_rate, t->use_tep, short_train);
v17_tx_set_get_bit(&t->fast_modems.v17_tx, get_bit_func, get_bit_user_data);
v17_tx_set_modem_status_handler(&t->fast_modems.v17_tx, modem_tx_status, (void *) s);
t->tx_handler = (span_tx_handler_t *) &v17_tx;
t->tx_user_data = &t->fast_modems.v17_tx;
/* For any fast modem, set 200ms of preamble flags */
hdlc_tx_flags(&t->hdlc_tx, bit_rate/(8*5));
s->transmit = TRUE;
break;
case T30_MODEM_DONE:
span_log(&s->logging, SPAN_LOG_FLOW, "FAX exchange complete\n");
/* Fall through */
default:
silence_gen_alter(&t->silence_gen, 0);
t->tx_handler = (span_tx_handler_t *) &silence_gen;
t->tx_user_data = &t->silence_gen;
s->transmit = FALSE;
break;
}
s->current_tx_type = type;
}
/*- End of function --------------------------------------------------------*/
void faxtester_set_timeout(faxtester_state_t *s, int timeout)
{
if (timeout >= 0)
s->timeout = s->timer + timeout*SAMPLE_RATE/1000;
else
s->timeout = 0x7FFFFFFFFFFFFFFFLL;
}
/*- End of function --------------------------------------------------------*/
void faxtester_set_transmit_on_idle(faxtester_state_t *s, int transmit_on_idle)
{
s->modems.transmit_on_idle = transmit_on_idle;
}
/*- End of function --------------------------------------------------------*/
void faxtester_set_tep_mode(faxtester_state_t *s, int use_tep)
{
s->modems.use_tep = use_tep;
}
/*- End of function --------------------------------------------------------*/
void faxtester_set_real_time_frame_handler(faxtester_state_t *s, faxtester_real_time_frame_handler_t *handler, void *user_data)
{
s->real_time_frame_handler = handler;
s->real_time_frame_user_data = user_data;
}
/*- End of function --------------------------------------------------------*/
void faxtester_set_front_end_step_complete_handler(faxtester_state_t *s, faxtester_front_end_step_complete_handler_t *handler, void *user_data)
{
s->front_end_step_complete_handler = handler;
s->front_end_step_complete_user_data = user_data;
}
/*- End of function --------------------------------------------------------*/
void faxtester_set_front_end_step_timeout_handler(faxtester_state_t *s, faxtester_front_end_step_complete_handler_t *handler, void *user_data)
{
s->front_end_step_timeout_handler = handler;
s->front_end_step_timeout_user_data = user_data;
}
/*- End of function --------------------------------------------------------*/
static void faxtester_fax_modems_init(fax_modems_state_t *s, int use_tep, void *user_data)
{
s->use_tep = use_tep;
hdlc_rx_init(&s->hdlc_rx, FALSE, FALSE, HDLC_FRAMING_OK_THRESHOLD, hdlc_accept, user_data);
hdlc_tx_init(&s->hdlc_tx, FALSE, 2, FALSE, hdlc_underflow_handler, user_data);
fsk_rx_init(&s->v21_rx, &preset_fsk_specs[FSK_V21CH2], FSK_FRAME_MODE_SYNC, (put_bit_func_t) hdlc_rx_put_bit, &s->hdlc_rx);
fsk_rx_signal_cutoff(&s->v21_rx, -45.5);
fsk_tx_init(&s->v21_tx, &preset_fsk_specs[FSK_V21CH2], (get_bit_func_t) hdlc_tx_get_bit, &s->hdlc_tx);
fsk_tx_set_modem_status_handler(&s->v21_tx, modem_tx_status, user_data);
v17_rx_init(&s->fast_modems.v17_rx, 14400, non_ecm_put_bit, user_data);
v17_tx_init(&s->fast_modems.v17_tx, 14400, s->use_tep, non_ecm_get_bit, user_data);
v17_tx_set_modem_status_handler(&s->fast_modems.v17_tx, modem_tx_status, user_data);
v29_rx_init(&s->fast_modems.v29_rx, 9600, non_ecm_put_bit, user_data);
v29_rx_signal_cutoff(&s->fast_modems.v29_rx, -45.5);
v29_tx_init(&s->fast_modems.v29_tx, 9600, s->use_tep, non_ecm_get_bit, user_data);
v29_tx_set_modem_status_handler(&s->fast_modems.v29_tx, modem_tx_status, user_data);
v27ter_rx_init(&s->fast_modems.v27ter_rx, 4800, non_ecm_put_bit, user_data);
v27ter_tx_init(&s->fast_modems.v27ter_tx, 4800, s->use_tep, non_ecm_get_bit, user_data);
v27ter_tx_set_modem_status_handler(&s->fast_modems.v27ter_tx, modem_tx_status, user_data);
silence_gen_init(&s->silence_gen, 0);
modem_connect_tones_tx_init(&s->connect_tx, MODEM_CONNECT_TONES_FAX_CNG);
modem_connect_tones_rx_init(&s->connect_rx,
MODEM_CONNECT_TONES_FAX_CNG,
tone_detected,
user_data);
dc_restore_init(&s->dc_restore);
s->rx_signal_present = FALSE;
s->rx_handler = (span_rx_handler_t *) &span_dummy_rx;
s->rx_user_data = NULL;
s->tx_handler = (span_tx_handler_t *) &silence_gen;
s->tx_user_data = &s->silence_gen;
}
/*- End of function --------------------------------------------------------*/
faxtester_state_t *faxtester_init(faxtester_state_t *s, int calling_party)
{
if (s == NULL)
{
if ((s = (faxtester_state_t *) malloc(sizeof(*s))) == NULL)
return NULL;
}
memset(s, 0, sizeof(*s));
span_log_init(&s->logging, SPAN_LOG_NONE, NULL);
span_log_set_protocol(&s->logging, "TST");
faxtester_fax_modems_init(&s->modems, FALSE, s);
faxtester_set_timeout(s, -1);
faxtester_set_tx_type(s, T30_MODEM_NONE, 0, FALSE, FALSE);
return s;
}
/*- End of function --------------------------------------------------------*/
int faxtester_release(faxtester_state_t *s)
{
return 0;
}
/*- End of function --------------------------------------------------------*/
int faxtester_free(faxtester_state_t *s)
{
free(s);
return 0;
}
/*- End of function --------------------------------------------------------*/
void faxtester_set_flush_handler(faxtester_state_t *s, faxtester_flush_handler_t *handler, void *user_data)
{
s->flush_handler = handler;
s->flush_user_data = user_data;
}
/*- End of function --------------------------------------------------------*/
/*- End of file ------------------------------------------------------------*/
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