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freeswitch/libs/spandsp/tests/data_modems_tests.c

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/*
* SpanDSP - a series of DSP components for telephony
*
* data_modems_tests.c - Tests for data_modems.
*
* Written by Steve Underwood <steveu@coppice.org>
*
* Copyright (C) 2011 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 */
/*! \page data_modems_tests_page Data modems tests
\section data_modems_tests_page_sec_1 What does it do?
*/
#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 <unistd.h>
#include <string.h>
#include <assert.h>
#include <sndfile.h>
#include "spandsp.h"
#include "spandsp-sim.h"
#if defined(ENABLE_GUI)
#include "media_monitor.h"
#endif
#define INPUT_FILE_NAME "../test-data/itu/fax/itu1.tif"
#define OUTPUT_FILE_NAME "t31.tif"
#define OUTPUT_WAVE_FILE_NAME "data_modems.wav"
#define SAMPLES_PER_CHUNK 160
struct command_response_s
{
const char *command;
int len_command;
const char *response;
int len_response;
};
char *decode_test_file = NULL;
int countdown = 0;
int command_response_test_step = -1;
char response_buf[1000];
int response_buf_ptr = 0;
bool answered = false;
bool done = false;
bool sequence_terminated = false;
data_modems_state_t *data_modems_state[2];
static void reporter(void *user_data, int reason, bert_results_t *results)
{
int channel;
channel = (int) (intptr_t) user_data;
switch (reason)
{
case BERT_REPORT_SYNCED:
fprintf(stderr, "%d: BERT report synced\n", channel);
break;
case BERT_REPORT_UNSYNCED:
fprintf(stderr, "%d: BERT report unsync'ed\n", channel);
break;
case BERT_REPORT_REGULAR:
fprintf(stderr, "%d: BERT report regular - %d bits, %d bad bits, %d resyncs\n", channel, results->total_bits, results->bad_bits, results->resyncs);
break;
case BERT_REPORT_GT_10_2:
fprintf(stderr, "%d: BERT report > 1 in 10^2\n", channel);
break;
case BERT_REPORT_LT_10_2:
fprintf(stderr, "%d: BERT report < 1 in 10^2\n", channel);
break;
case BERT_REPORT_LT_10_3:
fprintf(stderr, "%d: BERT report < 1 in 10^3\n", channel);
break;
case BERT_REPORT_LT_10_4:
fprintf(stderr, "%d: BERT report < 1 in 10^4\n", channel);
break;
case BERT_REPORT_LT_10_5:
fprintf(stderr, "%d: BERT report < 1 in 10^5\n", channel);
break;
case BERT_REPORT_LT_10_6:
fprintf(stderr, "%d: BERT report < 1 in 10^6\n", channel);
break;
case BERT_REPORT_LT_10_7:
fprintf(stderr, "%d: BERT report < 1 in 10^7\n", channel);
break;
default:
fprintf(stderr, "%d: BERT report reason %d\n", channel, reason);
break;
}
}
/*- End of function --------------------------------------------------------*/
static int get_msg(void *user_data, uint8_t msg[], int len)
{
return 0;
}
/*- End of function --------------------------------------------------------*/
static void put_msg(void *user_data, const uint8_t msg[], int len)
{
if (len < 0)
printf("Status %s\n", signal_status_to_str(len));
}
/*- End of function --------------------------------------------------------*/
static int modem_tests(int use_gui, int log_audio, int test_sending)
{
int mdm_len;
int16_t mdm_amp[SAMPLES_PER_CHUNK];
//int use_tep;
//logging_state_t *logging;
int outframes;
int16_t silence[SAMPLES_PER_CHUNK];
int16_t out_amp[2*SAMPLES_PER_CHUNK];
SNDFILE *wave_handle;
SNDFILE *in_handle;
int i;
int k;
int calling_party;
logging_state_t *logging;
bert_state_t *bert[2];
/* Test a pair of modems against each other */
/* Set up the test environment */
//use_tep = false;
wave_handle = NULL;
if (log_audio)
{
if ((wave_handle = sf_open_telephony_write(OUTPUT_WAVE_FILE_NAME, 2)) == NULL)
{
fprintf(stderr, " Cannot create audio file '%s'\n", OUTPUT_WAVE_FILE_NAME);
exit(2);
}
}
in_handle = NULL;
if (decode_test_file)
{
if ((in_handle = sf_open_telephony_read(decode_test_file, 1)) == NULL)
{
fprintf(stderr, " Cannot create audio file '%s'\n", decode_test_file);
exit(2);
}
}
memset(silence, 0, sizeof(silence));
memset(mdm_amp, 0, sizeof(mdm_amp));
mdm_len = 0;
/* Now set up and run the modems */
calling_party = true;
for (i = 0; i < 2; i++)
{
bert[i] = bert_init(NULL, 1000000, BERT_PATTERN_ITU_O152_11, 2400, 20);
bert_set_report(bert[i], 100000, reporter, (void *) (intptr_t) i);
if ((data_modems_state[i] = data_modems_init(NULL,
calling_party,
NULL,
NULL,
NULL,
NULL,
put_msg,
get_msg,
NULL)) == NULL)
{
fprintf(stderr, " Cannot start the data modem\n");
exit(2);
}
logging = data_modems_get_logging_state(data_modems_state[i]);
span_log_set_level(logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
span_log_set_tag(logging, "Modem");
calling_party = false;
}
#if defined(ENABLE_GUI)
if (use_gui)
start_media_monitor();
#endif
while (!done)
{
for (i = 0; i < 2; i++)
{
/* 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. */
mdm_len = data_modems_tx(data_modems_state[i], mdm_amp, SAMPLES_PER_CHUNK);
if (mdm_len < SAMPLES_PER_CHUNK)
{
vec_zeroi16(mdm_amp + mdm_len, SAMPLES_PER_CHUNK - mdm_len);
mdm_len = SAMPLES_PER_CHUNK;
}
if (log_audio)
{
for (k = 0; k < mdm_len; k++)
out_amp[2*k + i] = mdm_amp[k];
}
if (data_modems_rx(data_modems_state[i ^ 1], mdm_amp, mdm_len))
break;
}
if (log_audio)
{
outframes = sf_writef_short(wave_handle, out_amp, SAMPLES_PER_CHUNK);
if (outframes != SAMPLES_PER_CHUNK)
break;
}
}
if (decode_test_file)
{
if (sf_close_telephony(in_handle))
{
fprintf(stderr, " Cannot close audio file '%s'\n", decode_test_file);
exit(2);
}
}
if (log_audio)
{
if (sf_close_telephony(wave_handle))
{
fprintf(stderr, " Cannot close audio file '%s'\n", OUTPUT_WAVE_FILE_NAME);
exit(2);
}
}
if (!done || !sequence_terminated)
{
printf("Tests failed\n");
return 2;
}
return 0;
}
/*- End of function --------------------------------------------------------*/
int main(int argc, char *argv[])
{
int log_audio;
int test_sending;
int use_gui;
int opt;
decode_test_file = NULL;
log_audio = false;
test_sending = false;
use_gui = false;
while ((opt = getopt(argc, argv, "d:glrs")) != -1)
{
switch (opt)
{
case 'd':
decode_test_file = optarg;
break;
case 'g':
#if defined(ENABLE_GUI)
use_gui = true;
#else
fprintf(stderr, "Graphical monitoring not available\n");
exit(2);
#endif
break;
case 'l':
log_audio = true;
break;
case 'r':
test_sending = false;
break;
case 's':
test_sending = true;
break;
default:
//usage();
exit(2);
break;
}
}
modem_tests(use_gui, log_audio, test_sending);
printf("Tests passed\n");
return 0;
}
/*- End of function --------------------------------------------------------*/
/*- End of file ------------------------------------------------------------*/
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