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/*
* SpanDSP - a series of DSP components for telephony
*
* t38_gateway_to_terminal_tests.c - Joint tests for the T.38 FoIP terminal and gateway modules.
*
* Written by Steve Underwood <steveu@coppice.org>
*
* Copyright (C) 2005, 2006 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.
*
* $Id: t38_gateway_to_terminal_tests.c,v 1.66.4.1 2009/12/19 09:47:57 steveu Exp $
*/
/*! \file */
/*! \page t38_gateway_to_terminal_tests_page T.38 mixed gateway and termination tests
\section t38_gateway_to_terminal_tests_page_sec_1 What does it do?
These tests exercise the path
FAX machine -> T.38 gateway -> T.38 termination
*/
/* Enable the following definition to enable direct probing into the FAX structures */
//#define WITH_SPANDSP_INTERNALS
#if defined(HAVE_CONFIG_H)
#include <config.h>
#endif
#if defined(HAVE_FL_FL_H) && defined(HAVE_FL_FL_CARTESIAN_H) && defined(HAVE_FL_FL_AUDIO_METER_H)
#define ENABLE_GUI
#endif
#include <stdlib.h>
#include <stdio.h>
#include <fcntl.h>
#include <string.h>
#include <assert.h>
#include <errno.h>
#include <sndfile.h>
#if !defined(_WIN32)
#include <unistd.h>
#endif
//#if defined(WITH_SPANDSP_INTERNALS)
#define SPANDSP_EXPOSE_INTERNAL_STRUCTURES
//#endif
#include "spandsp.h"
#include "spandsp-sim.h"
#if defined(ENABLE_GUI)
#include "media_monitor.h"
#endif
#include "fax_utils.h"
#define SAMPLES_PER_CHUNK 160
#define INPUT_FILE_NAME "../test-data/itu/fax/itutests.tif"
#define OUTPUT_FILE_NAME "t38.tif"
#define OUTPUT_FILE_NAME_WAVE "t38_gateway_to_terminal.wav"
fax_state_t *fax_state_a;
t38_gateway_state_t *t38_state_a;
t38_terminal_state_t *t38_state_b;
g1050_state_t *path_a_to_b;
g1050_state_t *path_b_to_a;
double when = 0.0;
int done[2] = {FALSE, FALSE};
int succeeded[2] = {FALSE, FALSE};
int simulate_incrementing_repeats = FALSE;
static int phase_b_handler(t30_state_t *s, void *user_data, int result)
{
int i;
char tag[20];
i = (int) (intptr_t) user_data;
snprintf(tag, sizeof(tag), "%c: Phase B", i);
printf("%c: Phase B handler on channel %c - (0x%X) %s\n", i, i, result, t30_frametype(result));
log_rx_parameters(s, tag);
return T30_ERR_OK;
}
/*- End of function --------------------------------------------------------*/
static int phase_d_handler(t30_state_t *s, void *user_data, int result)
{
int i;
char tag[20];
i = (int) (intptr_t) user_data;
snprintf(tag, sizeof(tag), "%c: Phase D", i);
printf("%c: Phase D handler on channel %c - (0x%X) %s\n", i, i, result, t30_frametype(result));
log_transfer_statistics(s, tag);
log_tx_parameters(s, tag);
log_rx_parameters(s, tag);
return T30_ERR_OK;
}
/*- End of function --------------------------------------------------------*/
static void phase_e_handler(t30_state_t *s, void *user_data, int result)
{
int i;
t30_stats_t t;
char tag[20];
i = (int) (intptr_t) user_data;
snprintf(tag, sizeof(tag), "%c: Phase E", i);
printf("%c: Phase E handler on channel %c - (%d) %s\n", i, i, result, t30_completion_code_to_str(result));
log_transfer_statistics(s, tag);
log_tx_parameters(s, tag);
log_rx_parameters(s, tag);
t30_get_transfer_statistics(s, &t);
succeeded[i - 'A'] = (result == T30_ERR_OK) && (t.pages_tx == 12 || t.pages_rx == 12);
done[i - 'A'] = TRUE;
}
/*- End of function --------------------------------------------------------*/
static int tx_packet_handler_a(t38_core_state_t *s, void *user_data, const uint8_t *buf, int len, int count)
{
t38_terminal_state_t *t;
int i;
static int subst_seq = 0;
/* This routine queues messages between two instances of T.38 processing */
t = (t38_terminal_state_t *) user_data;
if (simulate_incrementing_repeats)
{
for (i = 0; i < count; i++)
{
span_log(&s->logging, SPAN_LOG_FLOW, "Send seq %d, len %d\n", subst_seq, len);
g1050_put(path_a_to_b, buf, len, subst_seq, when);
subst_seq = (subst_seq + 1) & 0xFFFF;
}
}
else
{
span_log(&s->logging, SPAN_LOG_FLOW, "Send seq %d, len %d, count %d\n", s->tx_seq_no, len, count);
for (i = 0; i < count; i++)
g1050_put(path_a_to_b, buf, len, s->tx_seq_no, when);
}
return 0;
}
/*- End of function --------------------------------------------------------*/
static int tx_packet_handler_b(t38_core_state_t *s, void *user_data, const uint8_t *buf, int len, int count)
{
t38_terminal_state_t *t;
int i;
static int subst_seq = 0;
/* This routine queues messages between two instances of T.38 processing */
t = (t38_terminal_state_t *) user_data;
if (simulate_incrementing_repeats)
{
for (i = 0; i < count; i++)
{
span_log(&s->logging, SPAN_LOG_FLOW, "Send seq %d, len %d\n", subst_seq, len);
g1050_put(path_b_to_a, buf, len, subst_seq, when);
subst_seq = (subst_seq + 1) & 0xFFFF;
}
}
else
{
span_log(&s->logging, SPAN_LOG_FLOW, "Send seq %d, len %d, count %d\n", s->tx_seq_no, len, count);
for (i = 0; i < count; i++)
g1050_put(path_b_to_a, buf, len, s->tx_seq_no, when);
}
return 0;
}
/*- End of function --------------------------------------------------------*/
int main(int argc, char *argv[])
{
int16_t t38_amp_a[SAMPLES_PER_CHUNK];
int16_t t30_amp_a[SAMPLES_PER_CHUNK];
int16_t out_amp[2*SAMPLES_PER_CHUNK];
int t38_len_a;
int t30_len_a;
int msg_len;
uint8_t msg[1024];
int log_audio;
int outframes;
int t38_version;
int use_ecm;
int use_tep;
int feedback_audio;
int use_transmit_on_idle;
SNDFILE *wave_handle;
const char *input_file_name;
int i;
int seq_no;
int model_no;
int speed_pattern_no;
double tx_when;
double rx_when;
int supported_modems;
int use_gui;
int opt;
t30_state_t *t30;
t38_core_state_t *t38_core;
logging_state_t *logging;
log_audio = FALSE;
t38_version = 1;
use_ecm = FALSE;
input_file_name = INPUT_FILE_NAME;
simulate_incrementing_repeats = FALSE;
model_no = 0;
speed_pattern_no = 1;
use_gui = FALSE;
use_tep = FALSE;
feedback_audio = FALSE;
use_transmit_on_idle = TRUE;
supported_modems = T30_SUPPORT_V27TER | T30_SUPPORT_V29 | T30_SUPPORT_V17;
while ((opt = getopt(argc, argv, "efgi:Ilm:M:s:tv:")) != -1)
{
switch (opt)
{
case 'e':
use_ecm = TRUE;
break;
case 'f':
feedback_audio = TRUE;
break;
case 'g':
#if defined(ENABLE_GUI)
use_gui = TRUE;
#else
fprintf(stderr, "Graphical monitoring not available\n");
exit(2);
#endif
break;
case 'i':
input_file_name = optarg;
break;
case 'I':
simulate_incrementing_repeats = TRUE;
break;
case 'l':
log_audio = TRUE;
break;
case 'm':
supported_modems = atoi(optarg);
break;
case 'M':
model_no = optarg[0] - 'A' + 1;
break;
case 's':
speed_pattern_no = atoi(optarg);
break;
case 't':
use_tep = TRUE;
break;
case 'v':
t38_version = atoi(optarg);
break;
default:
//usage();
exit(2);
break;
}
}
printf("Using T.38 version %d\n", t38_version);
if (use_ecm)
printf("Using ECM\n");
wave_handle = NULL;
if (log_audio)
{
if ((wave_handle = sf_open_telephony_write(OUTPUT_FILE_NAME_WAVE, 2)) == NULL)
{
fprintf(stderr, " Cannot create audio file '%s'\n", OUTPUT_FILE_NAME_WAVE);
exit(2);
}
}
srand48(0x1234567);
if ((path_a_to_b = g1050_init(model_no, speed_pattern_no, 100, 33)) == NULL)
{
fprintf(stderr, "Failed to start IP network path model\n");
exit(2);
}
if ((path_b_to_a = g1050_init(model_no, speed_pattern_no, 100, 33)) == NULL)
{
fprintf(stderr, "Failed to start IP network path model\n");
exit(2);
}
if ((fax_state_a = fax_init(NULL, TRUE)) == NULL)
{
fprintf(stderr, "Cannot start FAX\n");
exit(2);
}
t30 = fax_get_t30_state(fax_state_a);
fax_set_transmit_on_idle(fax_state_a, use_transmit_on_idle);
fax_set_tep_mode(fax_state_a, use_tep);
t30_set_supported_modems(t30, supported_modems);
t30_set_tx_ident(t30, "11111111");
t30_set_tx_nsf(t30, (const uint8_t *) "\x50\x00\x00\x00Spandsp\x00", 12);
t30_set_tx_file(t30, input_file_name, -1, -1);
t30_set_phase_b_handler(t30, phase_b_handler, (void *) (intptr_t) 'A');
t30_set_phase_d_handler(t30, phase_d_handler, (void *) (intptr_t) 'A');
t30_set_phase_e_handler(t30, phase_e_handler, (void *) (intptr_t) 'A');
t30_set_ecm_capability(t30, use_ecm);
if (use_ecm)
t30_set_supported_compressions(t30, T30_SUPPORT_T4_1D_COMPRESSION | T30_SUPPORT_T4_2D_COMPRESSION | T30_SUPPORT_T6_COMPRESSION);
logging = fax_get_logging_state(fax_state_a);
span_log_set_level(logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
span_log_set_tag(logging, "FAX-A ");
logging = t30_get_logging_state(t30);
span_log_set_level(logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
span_log_set_tag(logging, "FAX-A ");
memset(t30_amp_a, 0, sizeof(t30_amp_a));
if ((t38_state_a = t38_gateway_init(NULL, tx_packet_handler_a, t38_state_b)) == NULL)
{
fprintf(stderr, "Cannot start the T.38 channel\n");
exit(2);
}
t38_core = t38_gateway_get_t38_core_state(t38_state_a);
t38_gateway_set_transmit_on_idle(t38_state_a, use_transmit_on_idle);
t38_set_t38_version(t38_core, t38_version);
t38_gateway_set_ecm_capability(t38_state_a, use_ecm);
logging = t38_gateway_get_logging_state(t38_state_a);
span_log_set_level(logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
span_log_set_tag(logging, "T.38-A");
logging = t38_core_get_logging_state(t38_core);
span_log_set_level(logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
span_log_set_tag(logging, "T.38-A");
memset(t38_amp_a, 0, sizeof(t38_amp_a));
if ((t38_state_b = t38_terminal_init(NULL, FALSE, tx_packet_handler_b, t38_state_a)) == NULL)
{
fprintf(stderr, "Cannot start the T.38 channel\n");
exit(2);
}
t30 = t38_terminal_get_t30_state(t38_state_b);
t38_core = t38_terminal_get_t38_core_state(t38_state_b);
t38_set_t38_version(t38_core, t38_version);
logging = t38_terminal_get_logging_state(t38_state_b);
span_log_set_level(logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
span_log_set_tag(logging, "T.38-B");
logging = t38_core_get_logging_state(t38_core);
span_log_set_level(logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
span_log_set_tag(logging, "T.38-B");
logging = t30_get_logging_state(t30);
span_log_set_level(logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
span_log_set_tag(logging, "T.38-B");
t30_set_supported_modems(t30, supported_modems);
t30_set_tx_ident(t30, "22222222");
t30_set_rx_file(t30, OUTPUT_FILE_NAME, -1);
t30_set_phase_b_handler(t30, phase_b_handler, (void *) (intptr_t) 'B');
t30_set_phase_d_handler(t30, phase_d_handler, (void *) (intptr_t) 'B');
t30_set_phase_e_handler(t30, phase_e_handler, (void *) (intptr_t) 'B');
t30_set_ecm_capability(t30, use_ecm);
if (use_ecm)
t30_set_supported_compressions(t30, T30_SUPPORT_T4_1D_COMPRESSION | T30_SUPPORT_T4_2D_COMPRESSION | T30_SUPPORT_T6_COMPRESSION);
#if defined(ENABLE_GUI)
if (use_gui)
start_media_monitor();
#endif
for (;;)
{
logging = fax_get_logging_state(fax_state_a);
span_log_bump_samples(logging, SAMPLES_PER_CHUNK);
t30 = fax_get_t30_state(fax_state_a);
logging = t30_get_logging_state(t30);
span_log_bump_samples(logging, SAMPLES_PER_CHUNK);
logging = t38_gateway_get_logging_state(t38_state_a);
span_log_bump_samples(logging, SAMPLES_PER_CHUNK);
t38_core = t38_gateway_get_t38_core_state(t38_state_a);
logging = t38_core_get_logging_state(t38_core);
span_log_bump_samples(logging, SAMPLES_PER_CHUNK);
logging = t38_terminal_get_logging_state(t38_state_b);
span_log_bump_samples(logging, SAMPLES_PER_CHUNK);
t38_core = t38_terminal_get_t38_core_state(t38_state_b);
logging = t38_core_get_logging_state(t38_core);
span_log_bump_samples(logging, SAMPLES_PER_CHUNK);
t30 = t38_terminal_get_t30_state(t38_state_b);
logging = t30_get_logging_state(t30);
span_log_bump_samples(logging, SAMPLES_PER_CHUNK);
memset(out_amp, 0, sizeof(out_amp));
t38_terminal_send_timeout(t38_state_b, SAMPLES_PER_CHUNK);
t30_len_a = fax_tx(fax_state_a, t30_amp_a, SAMPLES_PER_CHUNK);
if (!use_transmit_on_idle)
{
/* The receive side always expects a full block of samples, but the
transmit side may not be sending any when it doesn't need to. We
may need to pad with some silence. */
if (t30_len_a < SAMPLES_PER_CHUNK)
{
memset(t30_amp_a + t30_len_a, 0, sizeof(int16_t)*(SAMPLES_PER_CHUNK - t30_len_a));
t30_len_a = SAMPLES_PER_CHUNK;
}
}
if (log_audio)
{
for (i = 0; i < t30_len_a; i++)
out_amp[2*i] = t30_amp_a[i];
}
if (feedback_audio)
{
for (i = 0; i < t30_len_a; i++)
t30_amp_a[i] += t38_amp_a[i] >> 1;
}
if (t38_gateway_rx(t38_state_a, t30_amp_a, t30_len_a))
break;
t38_len_a = t38_gateway_tx(t38_state_a, t38_amp_a, SAMPLES_PER_CHUNK);
if (!use_transmit_on_idle)
{
if (t38_len_a < SAMPLES_PER_CHUNK)
{
memset(t38_amp_a + t38_len_a, 0, sizeof(int16_t)*(SAMPLES_PER_CHUNK - t38_len_a));
t38_len_a = SAMPLES_PER_CHUNK;
}
}
if (log_audio)
{
for (i = 0; i < t38_len_a; i++)
out_amp[2*i + 1] = t38_amp_a[i];
}
if (fax_rx(fax_state_a, t38_amp_a, SAMPLES_PER_CHUNK))
break;
when += (float) SAMPLES_PER_CHUNK/(float) SAMPLE_RATE;
while ((msg_len = g1050_get(path_a_to_b, msg, 1024, when, &seq_no, &tx_when, &rx_when)) >= 0)
{
#if defined(ENABLE_GUI)
if (use_gui)
media_monitor_rx(seq_no, tx_when, rx_when);
#endif
t38_core = t38_terminal_get_t38_core_state(t38_state_b);
t38_core_rx_ifp_packet(t38_core, msg, msg_len, seq_no);
}
while ((msg_len = g1050_get(path_b_to_a, msg, 1024, when, &seq_no, &tx_when, &rx_when)) >= 0)
{
#if defined(ENABLE_GUI)
if (use_gui)
media_monitor_rx(seq_no, tx_when, rx_when);
#endif
t38_core = t38_gateway_get_t38_core_state(t38_state_a);
t38_core_rx_ifp_packet(t38_core, msg, msg_len, seq_no);
}
if (log_audio)
{
outframes = sf_writef_short(wave_handle, out_amp, SAMPLES_PER_CHUNK);
if (outframes != SAMPLES_PER_CHUNK)
break;
}
if (done[0] && done[1])
break;
#if defined(ENABLE_GUI)
if (use_gui)
media_monitor_update_display();
#endif
}
fax_release(fax_state_a);
t38_terminal_release(t38_state_b);
if (log_audio)
{
if (sf_close(wave_handle) != 0)
{
fprintf(stderr, " Cannot close audio file '%s'\n", OUTPUT_FILE_NAME_WAVE);
exit(2);
}
}
if (!succeeded[0] || !succeeded[1])
{
printf("Tests failed\n");
exit(2);
}
printf("Tests passed\n");
return 0;
}
/*- End of function --------------------------------------------------------*/
/*- End of file ------------------------------------------------------------*/
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