static int transmit_audio(fax_session *s)
{
int res = -1;
struct ast_format *original_read_fmt;
struct ast_format *original_write_fmt = NULL;
fax_state_t fax;
t30_state_t *t30state;
struct ast_frame *inf = NULL;
int last_state = 0;
struct timeval now, start, state_change;
enum ast_t38_state t38_state;
struct ast_control_t38_parameters t38_parameters = { .version = 0,
.max_ifp = 800,
.rate = AST_T38_RATE_14400,
.rate_management = AST_T38_RATE_MANAGEMENT_TRANSFERRED_TCF,
.fill_bit_removal = 1,
/*
* spandsp has API calls to support MMR and JBIG transcoding, but they aren't
* implemented quite yet... so don't offer them to the remote endpoint
* .transcoding_mmr = 1,
* .transcoding_jbig = 1,
*/
};
/* if in called party mode, try to use T.38 */
if (s->caller_mode == FALSE) {
/* check if we are already in T.38 mode (unlikely), or if we can request
* a switch... if so, request it now and wait for the result, rather
* than starting an audio FAX session that will have to be cancelled
*/
if ((t38_state = ast_channel_get_t38_state(s->chan)) == T38_STATE_NEGOTIATED) {
return 1;
} else if ((t38_state != T38_STATE_UNAVAILABLE) &&
(t38_parameters.request_response = AST_T38_REQUEST_NEGOTIATE,
(ast_indicate_data(s->chan, AST_CONTROL_T38_PARAMETERS, &t38_parameters, sizeof(t38_parameters)) == 0))) {
/* wait up to five seconds for negotiation to complete */
unsigned int timeout = 5000;
int ms;
ast_debug(1, "Negotiating T.38 for receive on %s\n", ast_channel_name(s->chan));
while (timeout > 0) {
ms = ast_waitfor(s->chan, 1000);
if (ms < 0) {
ast_log(LOG_WARNING, "something bad happened while channel '%s' was polling.\n", ast_channel_name(s->chan));
return -1;
}
if (!ms) {
/* nothing happened */
if (timeout > 0) {
timeout -= 1000;
continue;
} else {
ast_log(LOG_WARNING, "channel '%s' timed-out during the T.38 negotiation.\n", ast_channel_name(s->chan));
break;
}
}
if (!(inf = ast_read(s->chan))) {
return -1;
}
if ((inf->frametype == AST_FRAME_CONTROL) &&
(inf->subclass.integer == AST_CONTROL_T38_PARAMETERS) &&
(inf->datalen == sizeof(t38_parameters))) {
struct ast_control_t38_parameters *parameters = inf->data.ptr;
switch (parameters->request_response) {
case AST_T38_NEGOTIATED:
ast_debug(1, "Negotiated T.38 for receive on %s\n", ast_channel_name(s->chan));
res = 1;
break;
case AST_T38_REFUSED:
ast_log(LOG_WARNING, "channel '%s' refused to negotiate T.38\n", ast_channel_name(s->chan));
break;
default:
ast_log(LOG_ERROR, "channel '%s' failed to negotiate T.38\n", ast_channel_name(s->chan));
break;
}
ast_frfree(inf);
if (res == 1) {
return 1;
} else {
break;
}
}
ast_frfree(inf);
}
}
}
#if SPANDSP_RELEASE_DATE >= 20080725
/* for spandsp shaphots 0.0.6 and higher */
t30state = &fax.t30;
#else
/* for spandsp release 0.0.5 */
t30state = &fax.t30_state;
#endif
original_read_fmt = ao2_bump(ast_channel_readformat(s->chan));
res = ast_set_read_format(s->chan, ast_format_slin);
if (res < 0) {
ast_log(LOG_WARNING, "Unable to set to linear read mode, giving up\n");
goto done;
}
original_write_fmt = ao2_bump(ast_channel_writeformat(s->chan));
res = ast_set_write_format(s->chan, ast_format_slin);
if (res < 0) {
ast_log(LOG_WARNING, "Unable to set to linear write mode, giving up\n");
goto done;
}
/* Initialize T30 terminal */
fax_init(&fax, s->caller_mode);
/* Setup logging */
set_logging(&fax.logging);
set_logging(&t30state->logging);
/* Configure terminal */
set_local_info(t30state, s);
set_file(t30state, s);
set_ecm(t30state, TRUE);
fax_set_transmit_on_idle(&fax, TRUE);
t30_set_phase_e_handler(t30state, phase_e_handler, s);
start = state_change = ast_tvnow();
ast_activate_generator(s->chan, &generator, &fax);
while (!s->finished) {
inf = NULL;
if ((res = ast_waitfor(s->chan, 25)) < 0) {
ast_debug(1, "Error waiting for a frame\n");
break;
}
/* Watchdog */
now = ast_tvnow();
if (ast_tvdiff_sec(now, start) > WATCHDOG_TOTAL_TIMEOUT || ast_tvdiff_sec(now, state_change) > WATCHDOG_STATE_TIMEOUT) {
ast_log(LOG_WARNING, "It looks like we hung. Aborting.\n");
res = -1;
break;
}
if (!res) {
/* There was timeout waiting for a frame. Loop around and wait again */
continue;
}
/* There is a frame available. Get it */
res = 0;
if (!(inf = ast_read(s->chan))) {
ast_debug(1, "Channel hangup\n");
res = -1;
break;
}
ast_debug(10, "frame %d/%s, len=%d\n", inf->frametype, ast_format_get_name(inf->subclass.format), inf->datalen);
/* Check the frame type. Format also must be checked because there is a chance
that a frame in old format was already queued before we set channel format
to slinear so it will still be received by ast_read */
if (inf->frametype == AST_FRAME_VOICE &&
(ast_format_cmp(inf->subclass.format, ast_format_slin) == AST_FORMAT_CMP_EQUAL)) {
if (fax_rx(&fax, inf->data.ptr, inf->samples) < 0) {
/* I know fax_rx never returns errors. The check here is for good style only */
ast_log(LOG_WARNING, "fax_rx returned error\n");
res = -1;
break;
}
if (last_state != t30state->state) {
state_change = ast_tvnow();
last_state = t30state->state;
}
} else if ((inf->frametype == AST_FRAME_CONTROL) &&
(inf->subclass.integer == AST_CONTROL_T38_PARAMETERS)) {
struct ast_control_t38_parameters *parameters = inf->data.ptr;
if (parameters->request_response == AST_T38_NEGOTIATED) {
/* T38 switchover completed */
s->t38parameters = *parameters;
ast_debug(1, "T38 negotiated, finishing audio loop\n");
res = 1;
break;
} else if (parameters->request_response == AST_T38_REQUEST_NEGOTIATE) {
t38_parameters.request_response = AST_T38_NEGOTIATED;
ast_debug(1, "T38 request received, accepting\n");
/* Complete T38 switchover */
ast_indicate_data(s->chan, AST_CONTROL_T38_PARAMETERS, &t38_parameters, sizeof(t38_parameters));
/* Do not break audio loop, wait until channel driver finally acks switchover
* with AST_T38_NEGOTIATED
*/
}
}
ast_frfree(inf);
inf = NULL;
}
ast_debug(1, "Loop finished, res=%d\n", res);
if (inf)
ast_frfree(inf);
ast_deactivate_generator(s->chan);
/* If we are switching to T38, remove phase E handler. Otherwise it will be executed
by t30_terminate, display diagnostics and set status variables although no transmittion
has taken place yet. */
if (res > 0) {
t30_set_phase_e_handler(t30state, NULL, NULL);
}
t30_terminate(t30state);
fax_release(&fax);
done:
if (original_write_fmt) {
if (ast_set_write_format(s->chan, original_write_fmt) < 0)
ast_log(LOG_WARNING, "Unable to restore write format on '%s'\n", ast_channel_name(s->chan));
ao2_ref(original_write_fmt, -1);
}
if (original_read_fmt) {
if (ast_set_read_format(s->chan, original_read_fmt) < 0)
ast_log(LOG_WARNING, "Unable to restore read format on '%s'\n", ast_channel_name(s->chan));
ao2_ref(original_read_fmt, -1);
}
return res;
}
static int transmit_t38(fax_session *s)
{
int res = 0;
t38_terminal_state_t t38;
struct ast_frame *inf = NULL;
int last_state = 0;
struct timeval now, start, state_change, last_frame;
t30_state_t *t30state;
t38_core_state_t *t38state;
#if SPANDSP_RELEASE_DATE >= 20080725
/* for spandsp shaphots 0.0.6 and higher */
t30state = &t38.t30;
t38state = &t38.t38_fe.t38;
#else
/* for spandsp releases 0.0.5 */
t30state = &t38.t30_state;
t38state = &t38.t38;
#endif
/* Initialize terminal */
memset(&t38, 0, sizeof(t38));
if (t38_terminal_init(&t38, s->caller_mode, t38_tx_packet_handler, s->chan) == NULL) {
ast_log(LOG_WARNING, "Unable to start T.38 termination.\n");
res = -1;
goto disable_t38;
}
t38_set_max_datagram_size(t38state, s->t38parameters.max_ifp);
if (s->t38parameters.fill_bit_removal) {
t38_set_fill_bit_removal(t38state, TRUE);
}
if (s->t38parameters.transcoding_mmr) {
t38_set_mmr_transcoding(t38state, TRUE);
}
if (s->t38parameters.transcoding_jbig) {
t38_set_jbig_transcoding(t38state, TRUE);
}
/* Setup logging */
set_logging(&t38.logging);
set_logging(&t30state->logging);
set_logging(&t38state->logging);
/* Configure terminal */
set_local_info(t30state, s);
set_file(t30state, s);
set_ecm(t30state, TRUE);
t30_set_phase_e_handler(t30state, phase_e_handler, s);
now = start = state_change = ast_tvnow();
while (!s->finished) {
inf = NULL;
if ((res = ast_waitfor(s->chan, 25)) < 0) {
ast_debug(1, "Error waiting for a frame\n");
break;
}
last_frame = now;
/* Watchdog */
now = ast_tvnow();
if (ast_tvdiff_sec(now, start) > WATCHDOG_TOTAL_TIMEOUT || ast_tvdiff_sec(now, state_change) > WATCHDOG_STATE_TIMEOUT) {
ast_log(LOG_WARNING, "It looks like we hung. Aborting.\n");
res = -1;
break;
}
t38_terminal_send_timeout(&t38, ast_tvdiff_us(now, last_frame) / (1000000 / 8000));
if (!res) {
/* There was timeout waiting for a frame. Loop around and wait again */
continue;
}
/* There is a frame available. Get it */
res = 0;
if (!(inf = ast_read(s->chan))) {
ast_debug(1, "Channel hangup\n");
res = -1;
break;
}
ast_debug(10, "frame %d/%d, len=%d\n", inf->frametype, inf->subclass.integer, inf->datalen);
if (inf->frametype == AST_FRAME_MODEM && inf->subclass.integer == AST_MODEM_T38) {
t38_core_rx_ifp_packet(t38state, inf->data.ptr, inf->datalen, inf->seqno);
if (last_state != t30state->state) {
state_change = ast_tvnow();
last_state = t30state->state;
}
} else if (inf->frametype == AST_FRAME_CONTROL && inf->subclass.integer == AST_CONTROL_T38_PARAMETERS) {
struct ast_control_t38_parameters *parameters = inf->data.ptr;
if (parameters->request_response == AST_T38_TERMINATED) {
ast_debug(1, "T38 down, finishing\n");
break;
}
}
ast_frfree(inf);
inf = NULL;
}
ast_debug(1, "Loop finished, res=%d\n", res);
if (inf)
ast_frfree(inf);
t30_terminate(t30state);
t38_terminal_release(&t38);
disable_t38:
/* if we are not the caller, it's our job to shut down the T.38
* session when the FAX transmisson is complete.
*/
if ((s->caller_mode == FALSE) &&
(ast_channel_get_t38_state(s->chan) == T38_STATE_NEGOTIATED)) {
struct ast_control_t38_parameters t38_parameters = { .request_response = AST_T38_REQUEST_TERMINATE, };
if (ast_indicate_data(s->chan, AST_CONTROL_T38_PARAMETERS, &t38_parameters, sizeof(t38_parameters)) == 0) {
/* wait up to five seconds for negotiation to complete */
unsigned int timeout = 5000;
int ms;
ast_debug(1, "Shutting down T.38 on %s\n", ast_channel_name(s->chan));
while (timeout > 0) {
ms = ast_waitfor(s->chan, 1000);
if (ms < 0) {
ast_log(LOG_WARNING, "something bad happened while channel '%s' was polling.\n", ast_channel_name(s->chan));
return -1;
}
if (!ms) {
/* nothing happened */
if (timeout > 0) {
timeout -= 1000;
continue;
} else {
ast_log(LOG_WARNING, "channel '%s' timed-out during the T.38 shutdown.\n", ast_channel_name(s->chan));
break;
}
}
if (!(inf = ast_read(s->chan))) {
return -1;
}
if ((inf->frametype == AST_FRAME_CONTROL) &&
(inf->subclass.integer == AST_CONTROL_T38_PARAMETERS) &&
(inf->datalen == sizeof(t38_parameters))) {
struct ast_control_t38_parameters *parameters = inf->data.ptr;
switch (parameters->request_response) {
case AST_T38_TERMINATED:
ast_debug(1, "Shut down T.38 on %s\n", ast_channel_name(s->chan));
break;
case AST_T38_REFUSED:
ast_log(LOG_WARNING, "channel '%s' refused to disable T.38\n", ast_channel_name(s->chan));
break;
default:
ast_log(LOG_ERROR, "channel '%s' failed to disable T.38\n", ast_channel_name(s->chan));
break;
}
ast_frfree(inf);
break;
}
ast_frfree(inf);
}
}
}
return res;
}
static int t30_tests(int t38_mode, int use_gui, int log_audio, int test_sending, int g1050_model_no, int g1050_speed_pattern_no)
{
t38_terminal_state_t *t38_state;
fax_state_t *fax_state;
int fast_send;
int fast_send_tcf;
int fast_blocks;
int msg_len;
int t30_len;
int t31_len;
int t38_version;
int without_pacing;
int use_tep;
int seq_no;
int i;
int k;
int outframes;
uint8_t fast_buf[1000];
uint8_t msg[1024];
double tx_when;
double rx_when;
t30_state_t *t30;
t38_core_state_t *t38_core;
logging_state_t *logging;
int16_t t30_amp[SAMPLES_PER_CHUNK];
int16_t t31_amp[SAMPLES_PER_CHUNK];
int16_t silence[SAMPLES_PER_CHUNK];
int16_t out_amp[2*SAMPLES_PER_CHUNK];
SNDFILE *wave_handle;
SNDFILE *in_handle;
/* Test the T.31 modem against the full FAX machine in spandsp */
/* Set up the test environment */
t38_version = 1;
without_pacing = false;
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);
}
}
srand48(0x1234567);
if ((path_a_to_b = g1050_init(g1050_model_no, g1050_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(g1050_model_no, g1050_speed_pattern_no, 100, 33)) == NULL)
{
fprintf(stderr, "Failed to start IP network path model\n");
exit(2);
}
t38_state = NULL;
fax_state = NULL;
if (test_sending)
{
if (t38_mode)
{
if ((t38_state = t38_terminal_init(NULL, false, t38_tx_packet_handler, t31_state)) == NULL)
{
fprintf(stderr, "Cannot start the T.38 channel\n");
exit(2);
}
t30 = t38_terminal_get_t30_state(t38_state);
}
else
{
fax_state = fax_init(NULL, false);
t30 = fax_get_t30_state(fax_state);
}
t30_set_rx_file(t30, OUTPUT_FILE_NAME, -1);
fax_test_seq = fax_send_test_seq;
countdown = 0;
}
else
{
if (t38_mode)
{
if ((t38_state = t38_terminal_init(NULL, true, t38_tx_packet_handler, t31_state)) == NULL)
{
fprintf(stderr, "Cannot start the T.38 channel\n");
exit(2);
}
t30 = t38_terminal_get_t30_state(t38_state);
}
else
{
fax_state = fax_init(NULL, true);
t30 = fax_get_t30_state(fax_state);
}
t30_set_tx_file(t30, INPUT_FILE_NAME, -1, -1);
fax_test_seq = fax_receive_test_seq;
countdown = 250;
}
if (t38_mode)
{
t38_core = t38_terminal_get_t38_core_state(t38_state);
t38_set_t38_version(t38_core, t38_version);
t38_terminal_set_config(t38_state, without_pacing);
t38_terminal_set_tep_mode(t38_state, use_tep);
}
t30_set_tx_ident(t30, "11111111");
t30_set_supported_modems(t30, T30_SUPPORT_V27TER | T30_SUPPORT_V29 | T30_SUPPORT_V17);
//t30_set_tx_nsf(t30, (const uint8_t *) "\x50\x00\x00\x00Spandsp\x00", 12);
t30_set_phase_b_handler(t30, phase_b_handler, (void *) t30);
t30_set_phase_d_handler(t30, phase_d_handler, (void *) t30);
t30_set_phase_e_handler(t30, phase_e_handler, (void *) t30);
if (t38_mode)
logging = t38_terminal_get_logging_state(t38_state);
else
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, (t38_mode) ? "T.38" : "FAX");
if (t38_mode)
{
t38_core = t38_terminal_get_t38_core_state(t38_state);
span_log_set_level(&t38_core->logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
span_log_set_tag(&t38_core->logging, "T.38");
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");
}
else
{
logging = fax_get_logging_state(fax_state);
span_log_set_level(logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
span_log_set_tag(logging, "FAX");
}
memset(silence, 0, sizeof(silence));
memset(t30_amp, 0, sizeof(t30_amp));
/* Now set up and run the T.31 modem */
if ((t31_state = t31_init(NULL, at_tx_handler, NULL, modem_call_control, NULL, t31_tx_packet_handler, NULL)) == NULL)
{
fprintf(stderr, " Cannot start the T.31 modem\n");
exit(2);
}
logging = t31_get_logging_state(t31_state);
span_log_set_level(logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
span_log_set_tag(logging, "T.31");
logging = at_get_logging_state(t31_get_at_state(t31_state));
span_log_set_level(logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
span_log_set_tag(logging, "T.31");
if (t38_mode)
{
t38_core = t31_get_t38_core_state(t31_state);
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.31");
t31_set_mode(t31_state, true);
t38_set_t38_version(t38_core, t38_version);
}
fast_send = false;
fast_send_tcf = true;
fast_blocks = 0;
kick = true;
#if defined(ENABLE_GUI)
if (use_gui)
start_media_monitor();
#endif
while (!done)
{
if (countdown)
{
/* Deal with call setup, through the AT interface. */
if (answered)
{
countdown = 0;
t31_call_event(t31_state, AT_CALL_EVENT_ANSWERED);
}
else if (--countdown == 0)
{
t31_call_event(t31_state, AT_CALL_EVENT_ALERTING);
countdown = 250;
}
}
if (kick)
{
/* Work through the script */
kick = false;
if (fax_test_seq[test_seq_ptr].command > (const char *) 2)
{
if (fax_test_seq[test_seq_ptr].command[0])
{
printf("%s\n", fax_test_seq[test_seq_ptr].command);
t31_at_rx(t31_state, fax_test_seq[test_seq_ptr].command, fax_test_seq[test_seq_ptr].len_command);
}
}
else
{
if (fax_test_seq[test_seq_ptr].command == (const char *) 2)
{
printf("Fast send TCF\n");
fast_send = true;
fast_send_tcf = true;
fast_blocks = 100;
}
else
{
printf("Fast send image\n");
fast_send = true;
fast_send_tcf = false;
fast_blocks = 100;
}
}
}
if (fast_send)
{
/* Send fast modem data */
if (fast_send_tcf)
{
/* If we are sending TCF, its simply zeros */
memset(fast_buf, 0, 36);
if (fast_blocks == 1)
{
/* Tell the modem this is the end of the TCF data */
fast_buf[34] = DLE;
fast_buf[35] = ETX;
}
}
else
{
/* If we are sending image data, we need to make it look like genuine image data,
with proper EOL and RTC markers. */
if (fast_blocks > 1)
{
/* Create a chunk of white page, 1728 pixels wide. */
for (i = 0; i < 36; i += 4)
{
fast_buf[i] = 0x00;
fast_buf[i + 1] = 0x80;
fast_buf[i + 2] = 0xB2;
fast_buf[i + 3] = 0x01;
}
}
else
{
/* Create the end of page condition. */
for (i = 0; i < 36; i += 3)
{
fast_buf[i] = 0x00;
fast_buf[i + 1] = 0x08;
fast_buf[i + 2] = 0x80;
}
/* Tell the modem this is the end of the image data. */
fast_buf[34] = DLE;
fast_buf[35] = ETX;
}
}
t31_at_rx(t31_state, (char *) fast_buf, 36);
if (--fast_blocks == 0)
fast_send = false;
}
if (t38_mode)
{
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 = t31_get_t38_core_state(t31_state);
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_terminal_get_t38_core_state(t38_state);
t38_core_rx_ifp_packet(t38_core, msg, msg_len, seq_no);
}
#if defined(ENABLE_GUI)
if (use_gui)
media_monitor_update_display();
#endif
/* Bump the G.1050 models along */
when += (float) SAMPLES_PER_CHUNK/(float) SAMPLE_RATE;
/* Bump things along on the t38_terminal side */
span_log_bump_samples(t38_terminal_get_logging_state(t38_state), SAMPLES_PER_CHUNK);
t38_core = t38_terminal_get_t38_core_state(t38_state);
span_log_bump_samples(t38_core_get_logging_state(t38_core), SAMPLES_PER_CHUNK);
t38_terminal_send_timeout(t38_state, SAMPLES_PER_CHUNK);
t31_t38_send_timeout(t31_state, SAMPLES_PER_CHUNK);
}
else
{
t30_len = fax_tx(fax_state, t30_amp, SAMPLES_PER_CHUNK);
/* 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 < SAMPLES_PER_CHUNK)
{
memset(t30_amp + t30_len, 0, sizeof(int16_t)*(SAMPLES_PER_CHUNK - t30_len));
t30_len = SAMPLES_PER_CHUNK;
}
if (log_audio)
{
for (k = 0; k < t30_len; k++)
out_amp[2*k] = t30_amp[k];
}
if (t31_rx(t31_state, t30_amp, t30_len))
break;
t31_len = t31_tx(t31_state, t31_amp, SAMPLES_PER_CHUNK);
if (t31_len < SAMPLES_PER_CHUNK)
{
memset(t31_amp + t31_len, 0, sizeof(int16_t)*(SAMPLES_PER_CHUNK - t31_len));
t31_len = SAMPLES_PER_CHUNK;
}
if (log_audio)
{
for (k = 0; k < t31_len; k++)
out_amp[2*k + 1] = t31_amp[k];
}
if (fax_rx(fax_state, t31_amp, SAMPLES_PER_CHUNK))
break;
if (log_audio)
{
outframes = sf_writef_short(wave_handle, out_amp, SAMPLES_PER_CHUNK);
if (outframes != SAMPLES_PER_CHUNK)
break;
}
/* Bump things along on the FAX machine side */
span_log_bump_samples(fax_get_logging_state(fax_state), SAMPLES_PER_CHUNK);
}
/* Bump things along on the FAX machine side */
span_log_bump_samples(t30_get_logging_state(t30), SAMPLES_PER_CHUNK);
/* Bump things along on the T.31 modem side */
t38_core = t31_get_t38_core_state(t31_state);
span_log_bump_samples(t38_core_get_logging_state(t38_core), SAMPLES_PER_CHUNK);
span_log_bump_samples(t31_get_logging_state(t31_state), SAMPLES_PER_CHUNK);
span_log_bump_samples(at_get_logging_state(t31_get_at_state(t31_state)), SAMPLES_PER_CHUNK);
}
g1050_free(path_a_to_b);
g1050_free(path_b_to_a);
if (t38_mode)
t38_terminal_free(t38_state);
else
fax_free(fax_state);
t31_free(t31_state);
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 -1;
}
return 0;
}
int main(int argc, char *argv[])
{
int16_t silence[SAMPLES_PER_CHUNK];
int16_t t30_amp[2][SAMPLES_PER_CHUNK];
int16_t t38_amp[2][SAMPLES_PER_CHUNK];
int16_t t38_amp_hist_a[8][SAMPLES_PER_CHUNK];
int16_t t38_amp_hist_b[8][SAMPLES_PER_CHUNK];
int16_t out_amp[SAMPLES_PER_CHUNK*4];
int16_t *fax_rx_buf[2];
int16_t *fax_tx_buf[2];
int16_t *t38_gateway_rx_buf[2];
int16_t *t38_gateway_tx_buf[2];
int t30_len[2];
int t38_len[2];
int hist_ptr;
int log_audio;
int msg_len;
uint8_t msg[1024];
int outframes;
SNDFILE *wave_handle;
SNDFILE *input_wave_handle;
int use_ecm;
int use_tep;
int feedback_audio;
int use_transmit_on_idle;
int t38_version;
const char *input_tiff_file_name;
const char *decode_file_name;
int i;
int j;
int seq_no;
int g1050_model_no;
int g1050_speed_pattern_no;
int t38_transport;
double tx_when;
double rx_when;
int supported_modems;
int remove_fill_bits;
int opt;
int start_page;
int end_page;
int drop_frame;
int drop_frame_rate;
float signal_scaling;
int signal_level;
int noise_level;
int code_to_look_up;
int scan_line_time;
t38_stats_t t38_stats;
t30_stats_t t30_stats;
logging_state_t *logging;
int expected_pages;
char *page_header_info;
char *page_header_tz;
const char *tag;
char buf[132 + 1];
#if defined(ENABLE_GUI)
int use_gui;
#endif
#if defined(ENABLE_GUI)
use_gui = FALSE;
#endif
log_audio = FALSE;
use_ecm = FALSE;
t38_version = 1;
input_tiff_file_name = INPUT_TIFF_FILE_NAME;
t38_simulate_incrementing_repeats = FALSE;
g1050_model_no = 0;
g1050_speed_pattern_no = 1;
remove_fill_bits = FALSE;
use_tep = FALSE;
feedback_audio = FALSE;
use_transmit_on_idle = TRUE;
supported_modems = T30_SUPPORT_V27TER | T30_SUPPORT_V29 | T30_SUPPORT_V17;
page_header_info = NULL;
page_header_tz = NULL;
drop_frame = 0;
drop_frame_rate = 0;
start_page = -1;
end_page = -1;
signal_level = 0;
noise_level = -99;
scan_line_time = 0;
decode_file_name = NULL;
code_to_look_up = -1;
t38_transport = T38_TRANSPORT_UDPTL;
while ((opt = getopt(argc, argv, "c:d:D:efFgH:i:Ilm:M:n:p:s:tT:u:v:z:")) != -1)
{
switch (opt)
{
case 'c':
code_to_look_up = atoi(optarg);
break;
case 'd':
decode_file_name = optarg;
break;
case 'D':
drop_frame_rate =
drop_frame = atoi(optarg);
break;
case 'e':
use_ecm = TRUE;
break;
case 'f':
feedback_audio = TRUE;
break;
case 'F':
remove_fill_bits = TRUE;
break;
case 'g':
#if defined(ENABLE_GUI)
use_gui = TRUE;
#else
fprintf(stderr, "Graphical monitoring not available\n");
exit(2);
#endif
break;
case 'H':
page_header_info = optarg;
break;
case 'i':
input_tiff_file_name = optarg;
break;
case 'I':
t38_simulate_incrementing_repeats = TRUE;
break;
case 'l':
log_audio = TRUE;
break;
case 'm':
supported_modems = atoi(optarg);
break;
case 'M':
g1050_model_no = optarg[0] - 'A' + 1;
break;
case 'n':
noise_level = atoi(optarg);
break;
case 'p':
for (i = 0; i < 2; i++)
{
switch (optarg[i])
{
case 'A':
mode[i] = AUDIO_FAX;
break;
case 'G':
mode[i] = T38_GATEWAY_FAX;
break;
case 'T':
mode[i] = T38_TERMINAL_FAX;
break;
default:
fprintf(stderr, "Unknown FAX path element %c\n", optarg[i]);
exit(2);
}
}
if ((mode[0] == AUDIO_FAX && mode[1] != AUDIO_FAX)
||
(mode[0] != AUDIO_FAX && mode[1] == AUDIO_FAX))
{
fprintf(stderr, "Invalid FAX path %s\n", optarg);
exit(2);
}
break;
case 's':
g1050_speed_pattern_no = atoi(optarg);
break;
#if 0
case 's':
signal_level = atoi(optarg);
break;
#endif
case 'S':
scan_line_time = atoi(optarg);
break;
case 't':
use_tep = TRUE;
break;
case 'T':
start_page = 0;
end_page = atoi(optarg);
break;
case 'u':
if (strcasecmp(optarg, "udptl") == 0)
t38_transport = T38_TRANSPORT_UDPTL;
else if (strcasecmp(optarg, "rtp") == 0)
t38_transport = T38_TRANSPORT_RTP;
else if (strcasecmp(optarg, "tcp") == 0)
t38_transport = T38_TRANSPORT_TCP;
else if (strcasecmp(optarg, "tcp-tpkt") == 0)
t38_transport = T38_TRANSPORT_TCP_TPKT;
else
{
fprintf(stderr, "Unknown T.38 transport mode\n");
exit(2);
}
break;
case 'v':
t38_version = atoi(optarg);
break;
case 'z':
page_header_tz = optarg;
break;
default:
//usage();
exit(2);
break;
}
}
if (code_to_look_up >= 0)
{
printf("Result code %d is %s\n", code_to_look_up, t30_completion_code_to_str(code_to_look_up));
exit(0);
}
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_WAVE_FILE_NAME, 4)) == NULL)
{
fprintf(stderr, " Cannot create audio file '%s'\n", OUTPUT_WAVE_FILE_NAME);
exit(2);
}
}
memset(silence, 0, sizeof(silence));
srand48(0x1234567);
/* Set up the nodes */
input_wave_handle = NULL;
if (mode[0] == T38_TERMINAL_FAX)
{
}
else
{
if (decode_file_name)
{
if ((input_wave_handle = sf_open_telephony_read(decode_file_name, 1)) == NULL)
{
fprintf(stderr, " Cannot open audio file '%s'\n", decode_file_name);
exit(2);
}
}
}
for (i = 0; i < 2; i++)
{
tag = (i == 0) ? "A" : "B";
memset(&expected_rx_info[i], 0, sizeof(expected_rx_info[i]));
if (mode[i] == T38_TERMINAL_FAX)
{
if ((t38_state[i] = t38_terminal_init(NULL, (i == 0), tx_packet_handler, (void *) (intptr_t) i)) == NULL)
{
fprintf(stderr, "Cannot start the T.38 terminal instance\n");
exit(2);
}
t30_state[i] = t38_terminal_get_t30_state(t38_state[i]);
t38_core_state[i] = t38_terminal_get_t38_core_state(t38_state[i]);
logging = t38_terminal_get_logging_state(t38_state[i]);
span_log_set_level(logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_PROTOCOL | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
span_log_set_tag(logging, tag);
logging = t38_core_get_logging_state(t38_core_state[i]);
span_log_set_level(logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_PROTOCOL | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
span_log_set_tag(logging, tag);
logging = t30_get_logging_state(t30_state[i]);
span_log_set_level(logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_PROTOCOL | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
span_log_set_tag(logging, tag);
}
else
{
if ((fax_state[i] = fax_init(NULL, (i == 0))) == NULL)
{
fprintf(stderr, "Cannot start FAX instance\n");
exit(2);
}
t30_state[i] = fax_get_t30_state(fax_state[i]);
logging = fax_get_logging_state(fax_state[i]);
span_log_set_level(logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_PROTOCOL | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
span_log_set_tag(logging, tag);
logging = fax_modems_get_logging_state(&fax_state[i]->modems);
span_log_set_level(logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_PROTOCOL | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
span_log_set_tag(logging, tag);
logging = t30_get_logging_state(t30_state[i]);
span_log_set_level(logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_PROTOCOL | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
span_log_set_tag(logging, tag);
if (mode[i] == T38_GATEWAY_FAX)
{
if ((t38_gateway_state[i] = t38_gateway_init(NULL, tx_packet_handler, (void *) (intptr_t) i)) == NULL)
{
fprintf(stderr, "Cannot start the T.38 gateway instancel\n");
exit(2);
}
t38_core_state[i] = t38_gateway_get_t38_core_state(t38_gateway_state[i]);
logging = t38_gateway_get_logging_state(t38_gateway_state[i]);
span_log_set_level(logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_PROTOCOL | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
span_log_set_tag(logging, tag);
logging = fax_modems_get_logging_state(&t38_gateway_state[i]->audio.modems);
span_log_set_level(logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_PROTOCOL | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
span_log_set_tag(logging, tag);
logging = t38_core_get_logging_state(t38_core_state[i]);
span_log_set_level(logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_PROTOCOL | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
span_log_set_tag(logging, tag);
fax_rx_buf[i] = t38_amp[i];
fax_tx_buf[i] = t30_amp[i];
t38_gateway_rx_buf[i] = t30_amp[i];
t38_gateway_tx_buf[i] = t38_amp[i];
}
else
{
fax_rx_buf[i] = t30_amp[i];
fax_tx_buf[i] = t30_amp[i ^ 1];
t38_gateway_rx_buf[i] = NULL;
t38_gateway_tx_buf[i] = NULL;
}
awgn_state[i] = NULL;
signal_scaling = 1.0f;
if (noise_level > -99)
{
awgn_state[i] = awgn_init_dbm0(NULL, 1234567, noise_level);
signal_scaling = powf(10.0f, signal_level/20.0f);
printf("Signal scaling %f\n", signal_scaling);
}
}
set_t30_callbacks(t30_state[i], i);
}
/* Set up the channels */
for (i = 0; i < 2; i++)
{
if ((g1050_path[i] = g1050_init(g1050_model_no, g1050_speed_pattern_no, 100, 33)) == NULL)
{
fprintf(stderr, "Failed to start IP network path model\n");
exit(2);
}
memset(audio_buffer[2*i], 0, SAMPLES_PER_CHUNK*sizeof(int16_t));
memset(audio_buffer[2*i + 1], 0, SAMPLES_PER_CHUNK*sizeof(int16_t));
memset(t30_amp[i], 0, sizeof(t30_amp[i]));
memset(t38_amp[i], 0, sizeof(t38_amp[i]));
}
memset(t38_amp_hist_a, 0, sizeof(t38_amp_hist_a));
memset(t38_amp_hist_b, 0, sizeof(t38_amp_hist_b));
for (i = 0; i < 2; i++)
{
j = i + 1;
sprintf(buf, "%d%d%d%d%d%d%d%d", j, j, j, j, j, j, j, j);
t30_set_tx_ident(t30_state[i], buf);
strcpy(expected_rx_info[i ^ 1].ident, buf);
sprintf(buf, "Sub-address %d", j);
t30_set_tx_sub_address(t30_state[i], buf);
//strcpy(expected_rx_info[i ^ 1].sub_address, buf);
sprintf(buf, "Sender ID %d", j);
t30_set_tx_sender_ident(t30_state[i], buf);
//strcpy(expected_rx_info[i ^ 1].sender_ident, buf);
sprintf(buf, "Password %d", j);
t30_set_tx_password(t30_state[i], buf);
//strcpy(expected_rx_info[i ^ 1].password, buf);
sprintf(buf, "Polled sub-add %d", j);
t30_set_tx_polled_sub_address(t30_state[i], buf);
//strcpy(expected_rx_info[i ^ 1].polled_sub_address, buf);
sprintf(buf, "Select poll add %d", j);
t30_set_tx_selective_polling_address(t30_state[i], buf);
//strcpy(expected_rx_info[i ^ 1].selective_polling_address, buf);
t30_set_tx_page_header_info(t30_state[i], page_header_info);
if (page_header_tz)
t30_set_tx_page_header_tz(t30_state[i], page_header_tz);
if ((i & 1) == 1)
{
t30_set_tx_nsf(t30_state[i], (const uint8_t *) "\x50\x00\x00\x00Spandsp\x00", 12);
expected_rx_info[i ^ 1].nsf = (uint8_t *) "\x50\x00\x00\x00Spandsp\x00";
expected_rx_info[i ^ 1].nsf_len = 12;
}
t30_set_supported_modems(t30_state[i], supported_modems);
t30_set_supported_t30_features(t30_state[i],
T30_SUPPORT_IDENTIFICATION
| T30_SUPPORT_SELECTIVE_POLLING
| T30_SUPPORT_SUB_ADDRESSING);
t30_set_supported_image_sizes(t30_state[i],
T30_SUPPORT_US_LETTER_LENGTH
| T30_SUPPORT_US_LEGAL_LENGTH
| T30_SUPPORT_UNLIMITED_LENGTH
| T30_SUPPORT_215MM_WIDTH
| T30_SUPPORT_255MM_WIDTH
| T30_SUPPORT_303MM_WIDTH);
t30_set_supported_resolutions(t30_state[i],
T30_SUPPORT_STANDARD_RESOLUTION
| T30_SUPPORT_FINE_RESOLUTION
| T30_SUPPORT_SUPERFINE_RESOLUTION
| T30_SUPPORT_R8_RESOLUTION
| T30_SUPPORT_R16_RESOLUTION
| T30_SUPPORT_300_300_RESOLUTION
| T30_SUPPORT_400_400_RESOLUTION
| T30_SUPPORT_600_600_RESOLUTION
| T30_SUPPORT_1200_1200_RESOLUTION
| T30_SUPPORT_300_600_RESOLUTION
| T30_SUPPORT_400_800_RESOLUTION
| T30_SUPPORT_600_1200_RESOLUTION);
t30_set_ecm_capability(t30_state[i], use_ecm);
if (use_ecm)
t30_set_supported_compressions(t30_state[i], T30_SUPPORT_T4_1D_COMPRESSION | T30_SUPPORT_T4_2D_COMPRESSION | T30_SUPPORT_T6_COMPRESSION);
t30_set_minimum_scan_line_time(t30_state[i], scan_line_time);
if (mode[i] == T38_GATEWAY_FAX)
{
t38_gateway_set_transmit_on_idle(t38_gateway_state[i], use_transmit_on_idle);
t38_gateway_set_supported_modems(t38_gateway_state[i], supported_modems);
//t38_gateway_set_nsx_suppression(t38_state[i], NULL, 0, NULL, 0);
t38_gateway_set_fill_bit_removal(t38_gateway_state[i], remove_fill_bits);
t38_gateway_set_real_time_frame_handler(t38_gateway_state[i], real_time_gateway_frame_handler, (void *) (intptr_t) i);
t38_gateway_set_ecm_capability(t38_gateway_state[i], use_ecm);
}
if (mode[i] != AUDIO_FAX)
{
t38_set_t38_version(t38_core_state[i], t38_version);
}
if (mode[i] == T38_TERMINAL_FAX)
{
//t30_set_iaf_mode(t30_state[i], T30_IAF_MODE_NO_FILL_BITS);
switch (t38_transport)
{
case T38_TRANSPORT_UDPTL:
case T38_TRANSPORT_RTP:
t38_terminal_set_fill_bit_removal(t38_state[i], remove_fill_bits);
t38_terminal_set_tep_mode(t38_state[i], use_tep);
break;
case T38_TRANSPORT_TCP:
case T38_TRANSPORT_TCP_TPKT:
t38_terminal_set_fill_bit_removal(t38_state[i], TRUE);
t38_terminal_set_config(t38_state[i], T38_TERMINAL_OPTION_NO_PACING | T38_TERMINAL_OPTION_NO_INDICATORS);
t38_terminal_set_tep_mode(t38_state[i], FALSE);
break;
}
}
else
{
fax_set_transmit_on_idle(fax_state[i], use_transmit_on_idle);
fax_set_tep_mode(fax_state[i], use_tep);
}
}
t30_set_tx_file(t30_state[0], input_tiff_file_name, start_page, end_page);
t30_set_rx_file(t30_state[1], OUTPUT_TIFF_FILE_NAME, -1);
#if defined(ENABLE_GUI)
if (use_gui)
start_media_monitor();
#endif
hist_ptr = 0;
for (;;)
{
memset(out_amp, 0, sizeof(out_amp));
for (i = 0; i < 2; i++)
{
/* Update T.30 timing */
logging = t30_get_logging_state(t30_state[i]);
span_log_bump_samples(logging, SAMPLES_PER_CHUNK);
if (mode[i] == T38_TERMINAL_FAX)
{
/* Update T.38 termination timing */
logging = t38_terminal_get_logging_state(t38_state[i]);
span_log_bump_samples(logging, SAMPLES_PER_CHUNK);
logging = t38_core_get_logging_state(t38_core_state[i]);
span_log_bump_samples(logging, SAMPLES_PER_CHUNK);
completed[i] = t38_terminal_send_timeout(t38_state[i], SAMPLES_PER_CHUNK);
}
else
{
/* Update audio FAX timing */
logging = fax_get_logging_state(fax_state[i]);
span_log_bump_samples(logging, SAMPLES_PER_CHUNK);
fax_rx(fax_state[i], fax_rx_buf[i], SAMPLES_PER_CHUNK);
if (!t30_call_active(t30_state[i]))
{
completed[i] = TRUE;
continue;
}
if (i == 0 && input_wave_handle)
{
t30_len[i] = sf_readf_short(input_wave_handle, fax_tx_buf[i], SAMPLES_PER_CHUNK);
if (t30_len[i] == 0)
break;
}
else
{
t30_len[i] = fax_tx(fax_state[i], fax_tx_buf[i], 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[i] < SAMPLES_PER_CHUNK)
{
memset(t30_amp[i] + t30_len[i], 0, sizeof(int16_t)*(SAMPLES_PER_CHUNK - t30_len[i]));
t30_len[i] = SAMPLES_PER_CHUNK;
}
}
if (awgn_state[i])
{
for (j = 0; j < t30_len[i]; j++)
fax_tx_buf[i][j] = ((int16_t) (fax_tx_buf[i][j]*signal_scaling)) + awgn(awgn_state[i]);
}
}
if (log_audio)
{
for (j = 0; j < t30_len[i]; j++)
out_amp[4*j + 2*i] = t30_amp[i][j];
}
if (feedback_audio)
{
for (j = 0; j < t30_len[i]; j++)
t30_amp[i][j] += t38_amp_hist_a[hist_ptr][j] >> 1;
memcpy(t38_amp_hist_a[hist_ptr], t38_amp[i], sizeof(int16_t)*SAMPLES_PER_CHUNK);
}
if (mode[i] == T38_GATEWAY_FAX)
{
/* Update T.38 gateway timing */
logging = t38_gateway_get_logging_state(t38_gateway_state[i]);
span_log_bump_samples(logging, SAMPLES_PER_CHUNK);
logging = t38_core_get_logging_state(t38_core_state[i]);
span_log_bump_samples(logging, SAMPLES_PER_CHUNK);
if (drop_frame_rate && --drop_frame == 0)
{
drop_frame = drop_frame_rate;
if (t38_gateway_rx_fillin(t38_gateway_state[i], SAMPLES_PER_CHUNK))
break;
}
else
{
if (t38_gateway_rx(t38_gateway_state[i], t38_gateway_rx_buf[i], SAMPLES_PER_CHUNK))
break;
}
t38_len[i] = t38_gateway_tx(t38_gateway_state[i], t38_gateway_tx_buf[i], SAMPLES_PER_CHUNK);
if (!use_transmit_on_idle)
{
if (t38_len[i] < SAMPLES_PER_CHUNK)
{
memset(t38_amp[i] + t38_len[i], 0, sizeof(int16_t)*(SAMPLES_PER_CHUNK - t38_len[i]));
t38_len[i] = SAMPLES_PER_CHUNK;
}
}
if (feedback_audio)
{
for (j = 0; j < t30_len[i]; j++)
t30_amp[i][j] += t38_amp_hist_a[hist_ptr][j] >> 1;
memcpy(t38_amp_hist_a[hist_ptr], t38_amp[i], sizeof(int16_t)*SAMPLES_PER_CHUNK);
}
if (log_audio)
{
for (j = 0; j < t38_len[i]; j++)
out_amp[4*j + 2*i + 1] = t38_amp[i][j];
}
}
}
if (mode[i] != AUDIO_FAX)
{
while ((msg_len = g1050_get(g1050_path[i], 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_rx_ifp_packet(t38_core_state[i ^ 1], 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;
}
when += (float) SAMPLES_PER_CHUNK/(float) SAMPLE_RATE;
if (completed[0] && completed[1])
break;
#if defined(ENABLE_GUI)
if (use_gui)
media_monitor_update_display();
#endif
if (++hist_ptr > 3)
hist_ptr = 0;
}
int main(int argc, char *argv[])
{
int msg_len;
uint8_t msg[1024];
int t38_version;
int seq_no;
int use_ecm;
int without_pacing;
int use_tep;
int model_no;
int speed_pattern_no;
const char *input_file_name;
double tx_when;
double rx_when;
int use_gui;
int supported_modems;
int opt;
t30_state_t *t30;
t38_core_state_t *t38_core;
logging_state_t *logging;
t38_version = 1;
without_pacing = FALSE;
use_tep = FALSE;
input_file_name = INPUT_FILE_NAME;
use_ecm = FALSE;
simulate_incrementing_repeats = FALSE;
model_no = 0;
speed_pattern_no = 1;
use_gui = FALSE;
supported_modems = T30_SUPPORT_V27TER | T30_SUPPORT_V29 | T30_SUPPORT_V17;
while ((opt = getopt(argc, argv, "efgi:Im:M:ps:tv:")) != -1)
{
switch (opt)
{
case 'e':
use_ecm = 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 'm':
supported_modems = atoi(optarg);
break;
case 'M':
model_no = optarg[0] - 'A' + 1;
break;
case 'p':
without_pacing = TRUE;
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");
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 ((t38_state_a = t38_terminal_init(NULL, TRUE, tx_packet_handler_a, t38_state_b)) == NULL)
{
fprintf(stderr, "Cannot start the T.38 channel\n");
exit(2);
}
t30 = t38_terminal_get_t30_state(t38_state_a);
t38_core = t38_terminal_get_t38_core_state(t38_state_a);
t38_set_t38_version(t38_core, t38_version);
t38_terminal_set_config(t38_state_a, without_pacing);
t38_terminal_set_tep_mode(t38_state_a, use_tep);
logging = t38_terminal_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");
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-A");
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);
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);
t38_terminal_set_config(t38_state_b, without_pacing);
t38_terminal_set_tep_mode(t38_state_b, use_tep);
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_tx_nsf(t30, (const uint8_t *) "\x50\x00\x00\x00Spandsp\x00", 12);
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 = t38_terminal_get_logging_state(t38_state_a);
span_log_bump_samples(logging, SAMPLES_PER_CHUNK);
t38_core = t38_terminal_get_t38_core_state(t38_state_a);
logging = t38_core_get_logging_state(t38_core);
span_log_bump_samples(logging, SAMPLES_PER_CHUNK);
t30 = t38_terminal_get_t30_state(t38_state_a);
logging = t30_get_logging_state(t30);
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);
done[0] = t38_terminal_send_timeout(t38_state_a, SAMPLES_PER_CHUNK);
done[1] = t38_terminal_send_timeout(t38_state_b, SAMPLES_PER_CHUNK);
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_terminal_get_t38_core_state(t38_state_a);
t38_core_rx_ifp_packet(t38_core, msg, msg_len, seq_no);
}
if (done[0] && done[1])
break;
#if defined(ENABLE_GUI)
if (use_gui)
media_monitor_update_display();
#endif
}
t38_terminal_release(t38_state_a);
t38_terminal_release(t38_state_b);
if (!succeeded[0] || !succeeded[1])
{
printf("Tests failed\n");
exit(2);
}
printf("Tests passed\n");
return 0;
}