static int txfax_exec(struct ast_channel *chan, void *data)
{
int res = 0;
char source_file[256];
char *x;
char *s;
char *t;
char *v;
int option;
int len;
t30_state_t fax;
int calling_party;
int verbose;
int samples;
struct localuser *u;
struct ast_frame *inf = NULL;
struct ast_frame outf;
int original_read_fmt;
int original_write_fmt;
uint8_t __buf[sizeof(uint16_t)*MAX_BLOCK_SIZE + 2*AST_FRIENDLY_OFFSET];
uint8_t *buf = __buf + AST_FRIENDLY_OFFSET;
if (chan == NULL)
{
ast_log(LOG_WARNING, "Fax transmit channel is NULL. Giving up.\n");
return -1;
}
span_set_message_handler(span_message);
/* The next few lines of code parse out the filename and header from the input string */
if (data == NULL)
{
/* No data implies no filename or anything is present */
ast_log(LOG_WARNING, "Txfax requires an argument (filename)\n");
return -1;
}
calling_party = FALSE;
verbose = FALSE;
source_file[0] = '\0';
for (option = 0, v = s = data; v; option++, s++)
{
t = s;
v = strchr(s, '|');
s = (v) ? v : s + strlen(s);
strncpy((char *) buf, t, s - t);
buf[s - t] = '\0';
if (option == 0)
{
/* The first option is always the file name */
len = s - t;
if (len > 255)
len = 255;
strncpy(source_file, t, len);
source_file[len] = '\0';
}
else if (strncmp("caller", t, s - t) == 0)
{
calling_party = TRUE;
}
else if (strncmp("debug", t, s - t) == 0)
{
verbose = TRUE;
}
}
/* Done parsing */
LOCAL_USER_ADD(u);
if (chan->_state != AST_STATE_UP)
{
/* Shouldn't need this, but checking to see if channel is already answered
* Theoretically asterisk should already have answered before running the app */
res = ast_answer(chan);
}
if (!res)
{
original_read_fmt = chan->readformat;
if (original_read_fmt != AST_FORMAT_SLINEAR)
{
res = ast_set_read_format(chan, AST_FORMAT_SLINEAR);
if (res < 0)
{
ast_log(LOG_WARNING, "Unable to set to linear read mode, giving up\n");
return -1;
}
}
original_write_fmt = chan->writeformat;
if (original_write_fmt != AST_FORMAT_SLINEAR)
{
res = ast_set_write_format(chan, AST_FORMAT_SLINEAR);
if (res < 0)
{
ast_log(LOG_WARNING, "Unable to set to linear write mode, giving up\n");
res = ast_set_read_format(chan, original_read_fmt);
if (res)
ast_log(LOG_WARNING, "Unable to restore read format on '%s'\n", chan->name);
return -1;
}
}
fax_init(&fax, calling_party, NULL);
if (verbose)
fax.logging.level = SPAN_LOG_SHOW_SEVERITY | SPAN_LOG_SHOW_PROTOCOL | SPAN_LOG_FLOW;
x = pbx_builtin_getvar_helper(chan, "LOCALSTATIONID");
if (x && x[0])
t30_set_local_ident(&fax, x);
x = pbx_builtin_getvar_helper(chan, "LOCALHEADERINFO");
if (x && x[0])
t30_set_header_info(&fax, x);
t30_set_tx_file(&fax, source_file, -1, -1);
//t30_set_phase_b_handler(&fax, phase_b_handler, chan);
//t30_set_phase_d_handler(&fax, phase_d_handler, chan);
t30_set_phase_e_handler(&fax, phase_e_handler, chan);
while (ast_waitfor(chan, -1) > -1)
{
inf = ast_read(chan);
if (inf == NULL)
{
res = -1;
break;
}
if (inf->frametype == AST_FRAME_VOICE)
{
if (fax_rx(&fax, inf->data, inf->samples))
break;
samples = (inf->samples <= MAX_BLOCK_SIZE) ? inf->samples : MAX_BLOCK_SIZE;
len = fax_tx(&fax, (int16_t *) &buf[AST_FRIENDLY_OFFSET], samples);
if (len)
{
memset(&outf, 0, sizeof(outf));
outf.frametype = AST_FRAME_VOICE;
outf.subclass = AST_FORMAT_SLINEAR;
outf.datalen = len*sizeof(int16_t);
outf.samples = len;
outf.data = &buf[AST_FRIENDLY_OFFSET];
outf.offset = AST_FRIENDLY_OFFSET;
if (ast_write(chan, &outf) < 0)
{
ast_log(LOG_WARNING, "Unable to write frame to channel; %s\n", strerror(errno));
break;
}
}
}
ast_frfree(inf);
}
if (inf == NULL)
{
ast_log(LOG_DEBUG, "Got hangup\n");
res = -1;
}
if (original_read_fmt && original_read_fmt != AST_FORMAT_SLINEAR)
{
res = ast_set_read_format(chan, original_read_fmt);
if (res)
ast_log(LOG_WARNING, "Unable to restore read format on '%s'\n", chan->name);
}
if (original_write_fmt && original_write_fmt != AST_FORMAT_SLINEAR)
{
res = ast_set_write_format(chan, original_write_fmt);
if (res)
ast_log(LOG_WARNING, "Unable to restore write format on '%s'\n", chan->name);
}
fax_release(&fax);
}
else
{
ast_log(LOG_WARNING, "Could not answer channel '%s'\n", chan->name);
}
LOCAL_USER_REMOVE(u);
return res;
}
static int transmit_audio(fax_session *s)
{
int res = -1;
int original_read_fmt = AST_FORMAT_SLINEAR;
int original_write_fmt = AST_FORMAT_SLINEAR;
fax_state_t fax;
struct ast_dsp *dsp = NULL;
int detect_tone = 0;
struct ast_frame *inf = NULL;
struct ast_frame *fr;
int last_state = 0;
struct timeval now, start, state_change;
enum ast_control_t38 t38control;
original_read_fmt = s->chan->readformat;
if (original_read_fmt != AST_FORMAT_SLINEAR) {
res = ast_set_read_format(s->chan, AST_FORMAT_SLINEAR);
if (res < 0) {
ast_log(LOG_WARNING, "Unable to set to linear read mode, giving up\n");
goto done;
}
}
original_write_fmt = s->chan->writeformat;
if (original_write_fmt != AST_FORMAT_SLINEAR) {
res = ast_set_write_format(s->chan, AST_FORMAT_SLINEAR);
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(&fax.t30_state.logging);
/* Configure terminal */
set_local_info(&fax.t30_state, s);
set_file(&fax.t30_state, s);
set_ecm(&fax.t30_state, TRUE);
fax_set_transmit_on_idle(&fax, TRUE);
t30_set_phase_e_handler(&fax.t30_state, phase_e_handler, s);
if (s->t38state == T38_STATE_UNAVAILABLE) {
ast_debug(1, "T38 is unavailable on %s\n", s->chan->name);
} else if (!s->direction) {
/* We are receiving side and this means we are the side which should
request T38 when the fax is detected. Use DSP to detect fax tone */
ast_debug(1, "Setting up CNG detection on %s\n", s->chan->name);
dsp = ast_dsp_new();
ast_dsp_set_features(dsp, DSP_FEATURE_FAX_DETECT);
ast_dsp_set_faxmode(dsp, DSP_FAXMODE_DETECT_CNG);
detect_tone = 1;
}
start = state_change = ast_tvnow();
ast_activate_generator(s->chan, &generator, &fax);
while (!s->finished) {
res = ast_waitfor(s->chan, 20);
if (res < 0)
break;
else if (res > 0)
res = 0;
inf = ast_read(s->chan);
if (inf == NULL) {
ast_debug(1, "Channel hangup\n");
res = -1;
break;
}
ast_debug(10, "frame %d/%d, len=%d\n", inf->frametype, inf->subclass, inf->datalen);
/* Detect fax tone */
if (detect_tone && inf->frametype == AST_FRAME_VOICE) {
/* Duplicate frame because ast_dsp_process may free the frame passed */
fr = ast_frdup(inf);
/* Do not pass channel to ast_dsp_process otherwise it may queue modified audio frame back */
fr = ast_dsp_process(NULL, dsp, fr);
if (fr && fr->frametype == AST_FRAME_DTMF && fr->subclass == 'f') {
ast_debug(1, "Fax tone detected. Requesting T38\n");
t38control = AST_T38_REQUEST_NEGOTIATE;
ast_indicate_data(s->chan, AST_CONTROL_T38, &t38control, sizeof(t38control));
detect_tone = 0;
}
ast_frfree(fr);
}
/* 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 chanel format
to slinear so it will still be received by ast_read */
if (inf->frametype == AST_FRAME_VOICE && inf->subclass == AST_FORMAT_SLINEAR) {
if (fax_rx(&fax, inf->data, 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;
}
/* Watchdog */
if (last_state != fax.t30_state.state) {
state_change = ast_tvnow();
last_state = fax.t30_state.state;
}
} else if (inf->frametype == AST_FRAME_CONTROL && inf->subclass == AST_CONTROL_T38 &&
inf->datalen == sizeof(enum ast_control_t38)) {
t38control =*((enum ast_control_t38 *) inf->data);
if (t38control == AST_T38_NEGOTIATED) {
/* T38 switchover completed */
ast_debug(1, "T38 negotiated, finishing audio loop\n");
res = 1;
break;
}
}
ast_frfree(inf);
inf = NULL;
/* 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;
}
}
ast_debug(1, "Loop finished, res=%d\n", res);
if (inf)
ast_frfree(inf);
if (dsp)
ast_dsp_free(dsp);
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(&fax.t30_state, NULL, NULL);
}
t30_terminate(&fax.t30_state);
fax_release(&fax);
done:
if (original_write_fmt != AST_FORMAT_SLINEAR) {
if (ast_set_write_format(s->chan, original_write_fmt) < 0)
ast_log(LOG_WARNING, "Unable to restore write format on '%s'\n", s->chan->name);
}
if (original_read_fmt != AST_FORMAT_SLINEAR) {
if (ast_set_read_format(s->chan, original_read_fmt) < 0)
ast_log(LOG_WARNING, "Unable to restore read format on '%s'\n", s->chan->name);
}
return res;
}
static int transmit_audio(fax_session *s)
{
int res = -1;
struct ast_format original_read_fmt;
struct ast_format original_write_fmt;
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,
*/
};
ast_format_clear(&original_read_fmt);
ast_format_clear(&original_write_fmt);
/* 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
ast_format_copy(&original_read_fmt, ast_channel_readformat(s->chan));
if (original_read_fmt.id != AST_FORMAT_SLINEAR) {
res = ast_set_read_format_by_id(s->chan, AST_FORMAT_SLINEAR);
if (res < 0) {
ast_log(LOG_WARNING, "Unable to set to linear read mode, giving up\n");
goto done;
}
}
ast_format_copy(&original_write_fmt, ast_channel_writeformat(s->chan));
if (original_write_fmt.id != AST_FORMAT_SLINEAR) {
res = ast_set_write_format_by_id(s->chan, AST_FORMAT_SLINEAR);
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/%u, len=%d\n", inf->frametype, (unsigned int) inf->subclass.format.id, 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 && inf->subclass.format.id == AST_FORMAT_SLINEAR) {
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.id != AST_FORMAT_SLINEAR) {
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));
}
if (original_read_fmt.id != AST_FORMAT_SLINEAR) {
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));
}
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 fax_exec(struct cw_channel *chan, int argc, char **argv)
{
fax_state_t fax;
t38_terminal_state_t t38;
t30_state_t *t30;
const char *file_name;
int res = 0;
int ready;
int calling_party;
int verbose;
struct localuser *u;
int original_read_fmt;
int original_write_fmt;
/* Basic initial checkings */
if (chan == NULL)
{
cw_log(LOG_WARNING, "Fax transmit channel is NULL. Giving up.\n");
return -1;
}
/* Make sure they are initialized to zero */
memset(&fax, 0, sizeof(fax));
memset(&t38, 0, sizeof(t38));
if (argc < 1 || argc > 4)
{
cw_log(LOG_ERROR, "Syntax: %s\n", fax_syntax);
return -1;
}
/* Resetting channel variables related to T38 */
pbx_builtin_setvar_helper(chan, "REMOTESTATIONID", "");
pbx_builtin_setvar_helper(chan, "FAXPAGES", "");
pbx_builtin_setvar_helper(chan, "FAXRESOLUTION", "");
pbx_builtin_setvar_helper(chan, "FAXBITRATE", "");
pbx_builtin_setvar_helper(chan, "PHASEESTATUS", "");
pbx_builtin_setvar_helper(chan, "PHASEESTRING", "");
/* Parsing parameters */
calling_party = FALSE;
verbose = FALSE;
file_name = argv[0];
while (argv++, --argc)
{
if (strcmp(argv[0], "caller") == 0)
{
calling_party = TRUE;
}
else if (strcmp(argv[0], "debug") == 0)
{
verbose = TRUE;
}
}
/* Done parsing */
LOCAL_USER_ADD(u);
if (chan->_state != CW_STATE_UP)
{
/* Shouldn't need this, but checking to see if channel is already answered
* Theoretically the PBX should already have answered before running the app */
res = cw_answer(chan);
if (!res)
{
cw_log(LOG_DEBUG, "Could not answer channel '%s'\n", chan->name);
//LOCAL_USER_REMOVE(u);
//return res;
}
}
/* Setting read and write formats */
original_read_fmt = chan->readformat;
if (original_read_fmt != CW_FORMAT_SLINEAR)
{
res = cw_set_read_format(chan, CW_FORMAT_SLINEAR);
if (res < 0)
{
cw_log(LOG_WARNING, "Unable to set to linear read mode, giving up\n");
LOCAL_USER_REMOVE(u);
return -1;
}
}
original_write_fmt = chan->writeformat;
if (original_write_fmt != CW_FORMAT_SLINEAR)
{
res = cw_set_write_format(chan, CW_FORMAT_SLINEAR);
if (res < 0)
{
cw_log(LOG_WARNING, "Unable to set to linear write mode, giving up\n");
res = cw_set_read_format(chan, original_read_fmt);
if (res)
cw_log(LOG_WARNING, "Unable to restore read format on '%s'\n", chan->name);
LOCAL_USER_REMOVE(u);
return -1;
}
}
/* This is the main loop */
ready = TRUE;
if (chan->t38_status == T38_NEGOTIATED)
t30 = t38_terminal_get_t30_state(&t38);
else
t30 = fax_get_t30_state(&fax);
while (ready && ready_to_talk(chan))
{
if (ready && chan->t38_status != T38_NEGOTIATED)
{
t30 = fax_get_t30_state(&fax);
ready = fax_audio(chan, &fax, file_name, calling_party, verbose);
}
if (ready && chan->t38_status == T38_NEGOTIATED)
{
t30 = t38_terminal_get_t30_state(&t38);
ready = fax_t38(chan, &t38, file_name, calling_party, verbose);
}
if (chan->t38_status != T38_NEGOTIATING)
ready = FALSE; // 1 loop is enough. This could be useful if we want to turn from udptl to RTP later.
}
t30_terminate(t30);
fax_release(&fax);
t38_terminal_release(&t38);
/* Restoring initial channel formats. */
if (original_read_fmt != CW_FORMAT_SLINEAR)
{
if ((res = cw_set_read_format(chan, original_read_fmt)))
cw_log(LOG_WARNING, "Unable to restore read format on '%s'\n", chan->name);
}
if (original_write_fmt != CW_FORMAT_SLINEAR)
{
if ((res = cw_set_write_format(chan, original_write_fmt)))
cw_log(LOG_WARNING, "Unable to restore write format on '%s'\n", chan->name);
}
return ready;
}
int main(int argc, char *argv[])
{
int16_t t38_amp_b[SAMPLES_PER_CHUNK];
int16_t t30_amp_b[SAMPLES_PER_CHUNK];
int16_t out_amp[2*SAMPLES_PER_CHUNK];
int t38_len_b;
int t30_len_b;
int msg_len;
uint8_t msg[1024];
int log_audio;
int outframes;
SNDFILE *wave_handle;
int t38_version;
int use_ecm;
int use_tep;
int feedback_audio;
int use_transmit_on_idle;
const char *input_file_name;
int i;
int seq_no;
int g1050_model_no;
int g1050_speed_pattern_no;
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;
log_audio = false;
t38_version = 1;
use_ecm = false;
input_file_name = INPUT_FILE_NAME;
simulate_incrementing_repeats = false;
g1050_model_no = 0;
g1050_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':
g1050_model_no = optarg[0] - 'A' + 1;
break;
case 's':
g1050_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(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);
}
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);
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_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_gateway_init(NULL, tx_packet_handler_b, &t38_state_a)) == NULL)
{
fprintf(stderr, "Cannot start the T.38 channel\n");
exit(2);
}
t38_core = t38_gateway_get_t38_core_state(t38_state_b);
t38_gateway_set_transmit_on_idle(t38_state_b, use_transmit_on_idle);
t38_set_t38_version(t38_core, t38_version);
t38_gateway_set_ecm_capability(t38_state_b, use_ecm);
logging = t38_gateway_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");
memset(t38_amp_b, 0, sizeof(t38_amp_b));
if ((fax_state_b = fax_init(NULL, false)) == NULL)
{
fprintf(stderr, "Cannot start FAX\n");
exit(2);
}
t30 = fax_get_t30_state(fax_state_b);
fax_set_transmit_on_idle(fax_state_b, use_transmit_on_idle);
fax_set_tep_mode(fax_state_b, use_tep);
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);
logging = fax_get_logging_state(fax_state_b);
span_log_set_level(logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
span_log_set_tag(logging, "FAX-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, "FAX-B ");
memset(t30_amp_b, 0, sizeof(t30_amp_b));
#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_gateway_get_logging_state(t38_state_b);
span_log_bump_samples(logging, SAMPLES_PER_CHUNK);
t38_core = t38_gateway_get_t38_core_state(t38_state_b);
logging = t38_core_get_logging_state(t38_core);
span_log_bump_samples(logging, SAMPLES_PER_CHUNK);
logging = fax_get_logging_state(fax_state_b);
span_log_bump_samples(logging, SAMPLES_PER_CHUNK);
t30 = fax_get_t30_state(fax_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_a, SAMPLES_PER_CHUNK);
t30_len_b = fax_tx(fax_state_b, t30_amp_b, 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_b < SAMPLES_PER_CHUNK)
{
memset(t30_amp_b + t30_len_b, 0, sizeof(int16_t)*(SAMPLES_PER_CHUNK - t30_len_b));
t30_len_b = SAMPLES_PER_CHUNK;
}
}
if (feedback_audio)
{
for (i = 0; i < t30_len_b; i++)
t30_amp_b[i] += t38_amp_b[i] >> 1;
}
if (log_audio)
{
for (i = 0; i < t30_len_b; i++)
out_amp[2*i + 1] = t30_amp_b[i];
}
if (t38_gateway_rx(t38_state_b, t30_amp_b, t30_len_b))
break;
t38_len_b = t38_gateway_tx(t38_state_b, t38_amp_b, SAMPLES_PER_CHUNK);
if (!use_transmit_on_idle)
{
if (t38_len_b < SAMPLES_PER_CHUNK)
{
memset(t38_amp_b + t38_len_b, 0, sizeof(int16_t)*(SAMPLES_PER_CHUNK - t38_len_b));
t38_len_b = SAMPLES_PER_CHUNK;
}
}
if (log_audio)
{
for (i = 0; i < t38_len_b; i++)
out_amp[2*i] = t38_amp_b[i];
}
if (fax_rx(fax_state_b, t38_amp_b, 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_gateway_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 (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
}
t38_terminal_release(t38_state_a);
fax_release(fax_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;
}
int main(int argc, char *argv[])
{
t30_state_t *t30;
logging_state_t *logging;
const char *input_file_name;
int t38_version;
int caller;
int use_ecm;
int use_tep;
int options;
int supported_modems;
int fill_removal;
int opt;
int t38_terminal_operation;
uint32_t src_addr;
uint16_t src_port;
uint32_t dest_addr;
uint16_t dest_port;
caller = false;
use_ecm = false;
t38_version = 0;
options = 0;
input_file_name = INPUT_FILE_NAME;
fill_removal = false;
use_tep = false;
use_transmit_on_idle = true;
supported_modems = T30_SUPPORT_V27TER | T30_SUPPORT_V29 | T30_SUPPORT_V17;
t38_terminal_operation = true;
log_audio = false;
src_addr = 0;
src_port = 0;
dest_addr = 0;
dest_port = 0;
while ((opt = getopt(argc, argv, "cD:d:eFGi:lm:oS:s:tv:")) != -1)
{
switch (opt)
{
case 'c':
caller = true;
break;
case 'D':
dest_addr = parse_inet_addr(optarg);
break;
case 'd':
dest_port = atoi(optarg);
break;
case 'e':
use_ecm = true;
break;
case 'F':
fill_removal = true;
break;
case 'G':
t38_terminal_operation = false;
break;
case 'i':
input_file_name = optarg;
break;
case 'l':
log_audio = true;
break;
case 'm':
supported_modems = atoi(optarg);
break;
case 'o':
options = atoi(optarg);
break;
case 'S':
src_addr = parse_inet_addr(optarg);
break;
case 's':
src_port = 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 (t38_terminal_operation)
{
if ((t38_terminal_state = t38_terminal_init(NULL, caller, tx_packet_handler, NULL)) == NULL)
{
fprintf(stderr, "Cannot start the T.38 channel\n");
exit(2);
}
t30 = t38_terminal_get_t30_state(t38_terminal_state);
t38_core = t38_terminal_get_t38_core_state(t38_terminal_state);
t38_set_t38_version(t38_core, t38_version);
t38_terminal_set_config(t38_terminal_state, options);
t38_terminal_set_tep_mode(t38_terminal_state, use_tep);
t38_terminal_set_fill_bit_removal(t38_terminal_state, fill_removal);
logging = t38_terminal_get_logging_state(t38_terminal_state);
span_log_set_level(logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
span_log_set_tag(logging, "T.38");
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");
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");
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);
if (caller)
t30_set_tx_file(t30, INPUT_TIFF_FILE_NAME, -1, -1);
else
t30_set_rx_file(t30, OUTPUT_TIFF_FILE_NAME, -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);
t30_set_supported_compressions(t30, T4_COMPRESSION_T4_1D | T4_COMPRESSION_T4_2D | T4_COMPRESSION_T6 | T4_COMPRESSION_T85);
if (pcap_scan_pkts(input_file_name, src_addr, src_port, dest_addr, dest_port, t38_terminal_timing_update, process_packet, NULL))
exit(2);
/* Push the time along, to flush out any remaining activity from the application. */
now.tv_sec += 60;
t38_terminal_timing_update(NULL, &now);
}
else
{
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);
}
}
if ((t38_gateway_state = t38_gateway_init(NULL, tx_packet_handler, NULL)) == NULL)
{
fprintf(stderr, "Cannot start the T.38 channel\n");
exit(2);
}
t38_core = t38_gateway_get_t38_core_state(t38_gateway_state);
t38_gateway_set_transmit_on_idle(t38_gateway_state, use_transmit_on_idle);
t38_set_t38_version(t38_core, t38_version);
t38_gateway_set_ecm_capability(t38_gateway_state, use_ecm);
logging = t38_gateway_get_logging_state(t38_gateway_state);
span_log_set_level(logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME);
span_log_set_tag(logging, "T.38");
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");
if ((fax_state = fax_init(NULL, caller)) == NULL)
{
fprintf(stderr, "Cannot start FAX\n");
exit(2);
}
t30 = fax_get_t30_state(fax_state);
fax_set_transmit_on_idle(fax_state, use_transmit_on_idle);
fax_set_tep_mode(fax_state, use_tep);
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);
if (caller)
t30_set_tx_file(t30, INPUT_TIFF_FILE_NAME, -1, -1);
else
t30_set_rx_file(t30, OUTPUT_TIFF_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);
t30_set_supported_compressions(t30, T4_COMPRESSION_T4_1D | T4_COMPRESSION_T4_2D | T4_COMPRESSION_T6);
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 ");
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 ");
if (pcap_scan_pkts(input_file_name, src_addr, src_port, dest_addr, dest_port, t38_gateway_timing_update, process_packet, NULL))
exit(2);
/* Push the time along, to flush out any remaining activity from the application. */
now.tv_sec += 60;
t38_gateway_timing_update(NULL, &now);
fax_release(fax_state);
t38_gateway_release(t38_gateway_state);
if (log_audio)
{
if (sf_close_telephony(wave_handle))
{
fprintf(stderr, " Cannot close audio file '%s'\n", OUTPUT_WAVE_FILE_NAME);
exit(2);
}
}
}
}
int main(int argc, char *argv[])
{
SNDFILE *wave_handle;
SNDFILE *input_wave_handle;
int i;
int j;
int k;
struct machine_s *mc;
int outframes;
char buf[128 + 1];
int16_t silence[SAMPLES_PER_CHUNK];
int16_t out_amp[2*SAMPLES_PER_CHUNK];
int alldone;
const char *input_tiff_file_name;
const char *input_audio_file_name;
int log_audio;
int use_ecm;
int use_tep;
int use_transmit_on_idle;
#if defined(WITH_SPANDSP_INTERNALS)
int use_line_hits;
#endif
int polled_mode;
int reverse_flow;
int use_page_limits;
int supported_modems;
int signal_level;
int noise_level;
float signal_scaling;
time_t start_time;
time_t end_time;
int scan_line_time;
char *page_header_info;
int opt;
t30_state_t *t30;
logging_state_t *logging;
log_audio = false;
input_tiff_file_name = INPUT_TIFF_FILE_NAME;
input_audio_file_name = NULL;
use_ecm = false;
#if defined(WITH_SPANDSP_INTERNALS)
use_line_hits = false;
#endif
use_tep = false;
polled_mode = false;
page_header_info = NULL;
reverse_flow = false;
use_transmit_on_idle = true;
use_receiver_not_ready = false;
use_page_limits = false;
signal_level = 0;
noise_level = -99;
scan_line_time = 0;
supported_modems = T30_SUPPORT_V27TER | T30_SUPPORT_V29 | T30_SUPPORT_V17;
while ((opt = getopt(argc, argv, "ehH:i:I:lm:n:prRs:S:tTw:")) != -1)
{
switch (opt)
{
case 'e':
use_ecm = true;
break;
#if defined(WITH_SPANDSP_INTERNALS)
case 'h':
use_line_hits = true;
break;
#endif
case 'H':
page_header_info = optarg;
break;
case 'i':
input_tiff_file_name = optarg;
break;
case 'I':
input_audio_file_name = optarg;
break;
case 'l':
log_audio = true;
break;
case 'm':
supported_modems = atoi(optarg);
break;
case 'n':
noise_level = atoi(optarg);
break;
case 'p':
polled_mode = true;
break;
case 'r':
reverse_flow = true;
break;
case 'R':
use_receiver_not_ready = true;
break;
case 's':
signal_level = atoi(optarg);
break;
case 'S':
scan_line_time = atoi(optarg);
break;
case 't':
use_tep = true;
break;
case 'T':
use_page_limits = true;
break;
case 'w':
t30_state_to_wreck = atoi(optarg);
break;
default:
//usage();
exit(2);
break;
}
}
input_wave_handle = NULL;
if (input_audio_file_name)
{
if ((input_wave_handle = sf_open_telephony_read(input_audio_file_name, 1)) == NULL)
{
fprintf(stderr, " Cannot open audio file '%s'\n", input_audio_file_name);
exit(2);
}
}
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);
}
}
memset(silence, 0, sizeof(silence));
for (j = 0; j < FAX_MACHINES; j++)
{
machines[j].chan = j;
mc = &machines[j];
i = mc->chan + 1;
sprintf(buf, "%d%d%d%d%d%d%d%d", i, i, i, i, i, i, i, i);
if (reverse_flow)
mc->fax = fax_init(NULL, (mc->chan & 1) ? true : false);
else
mc->fax = fax_init(NULL, (mc->chan & 1) ? false : true);
mc->awgn = NULL;
signal_scaling = 1.0f;
if (noise_level > -99)
{
mc->awgn = awgn_init_dbm0(NULL, 1234567, noise_level);
signal_scaling = powf(10.0f, signal_level/20.0f);
printf("Signal scaling %f\n", signal_scaling);
}
fax_set_transmit_on_idle(mc->fax, use_transmit_on_idle);
fax_set_tep_mode(mc->fax, use_tep);
t30 = fax_get_t30_state(mc->fax);
t30_set_tx_ident(t30, buf);
t30_set_tx_sub_address(t30, "Sub-address");
t30_set_tx_sender_ident(t30, "Sender ID");
t30_set_tx_password(t30, "Password");
t30_set_tx_polled_sub_address(t30, "Polled sub-address");
t30_set_tx_selective_polling_address(t30, "Selective polling address");
t30_set_tx_page_header_info(t30, page_header_info);
t30_set_tx_nsf(t30, (const uint8_t *) "\x50\x00\x00\x00Spandsp\x00", 12);
t30_set_ecm_capability(t30, use_ecm);
t30_set_supported_t30_features(t30,
T30_SUPPORT_IDENTIFICATION
| T30_SUPPORT_SELECTIVE_POLLING
| T30_SUPPORT_SUB_ADDRESSING);
if ((mc->chan & 1))
t30_set_minimum_scan_line_time(t30, scan_line_time);
t30_set_supported_image_sizes(t30,
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,
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_supported_modems(t30, supported_modems);
if (use_ecm)
#if defined(SPANDSP_SUPPORT_T85)
t30_set_supported_compressions(t30, T30_SUPPORT_T4_1D_COMPRESSION | T30_SUPPORT_T4_2D_COMPRESSION | T30_SUPPORT_T6_COMPRESSION | T30_SUPPORT_T85_COMPRESSION);
#else
t30_set_supported_compressions(t30, T30_SUPPORT_T4_1D_COMPRESSION | T30_SUPPORT_T4_2D_COMPRESSION | T30_SUPPORT_T6_COMPRESSION);
#endif
if ((mc->chan & 1))
{
if (polled_mode)
{
if (use_page_limits)
t30_set_tx_file(t30, input_tiff_file_name, 3, 6);
else
t30_set_tx_file(t30, input_tiff_file_name, -1, -1);
}
else
{
sprintf(buf, "fax_tests_%d.tif", (mc->chan + 1)/2);
t30_set_rx_file(t30, buf, -1);
t30_set_rx_encoding(t30, T4_COMPRESSION_ITU_T6);
}
}
else
{
if (polled_mode)
{
sprintf(buf, "fax_tests_%d.tif", (mc->chan + 1)/2);
t30_set_rx_file(t30, buf, -1);
t30_set_rx_encoding(t30, T4_COMPRESSION_ITU_T6);
}
else
{
if (use_page_limits)
t30_set_tx_file(t30, input_tiff_file_name, 3, 6);
else
t30_set_tx_file(t30, input_tiff_file_name, -1, -1);
}
}
t30_set_phase_b_handler(t30, phase_b_handler, (void *) (intptr_t) mc->chan + 'A');
t30_set_phase_d_handler(t30, phase_d_handler, (void *) (intptr_t) mc->chan + 'A');
t30_set_phase_e_handler(t30, phase_e_handler, (void *) (intptr_t) mc->chan + 'A');
t30_set_real_time_frame_handler(t30, real_time_frame_handler, (void *) (intptr_t) mc->chan + 'A');
t30_set_document_handler(t30, document_handler, (void *) (intptr_t) mc->chan + 'A');
sprintf(mc->tag, "FAX-%d", j + 1);
logging = t30_get_logging_state(t30);
span_log_set_level(logging, SPAN_LOG_SHOW_SEVERITY | SPAN_LOG_SHOW_PROTOCOL | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME | SPAN_LOG_FLOW);
span_log_set_tag(logging, mc->tag);
if ((j & 1))
{
span_log_set_level(&t30->t4.rx.logging, SPAN_LOG_SHOW_SEVERITY | SPAN_LOG_SHOW_PROTOCOL | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME | SPAN_LOG_FLOW);
span_log_set_tag(&t30->t4.rx.logging, mc->tag);
}
else
{
span_log_set_level(&t30->t4.tx.logging, SPAN_LOG_SHOW_SEVERITY | SPAN_LOG_SHOW_PROTOCOL | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME | SPAN_LOG_FLOW);
span_log_set_tag(&t30->t4.tx.logging, mc->tag);
}
logging = fax_get_logging_state(mc->fax);
span_log_set_level(logging, SPAN_LOG_SHOW_SEVERITY | SPAN_LOG_SHOW_PROTOCOL | SPAN_LOG_SHOW_TAG | SPAN_LOG_SHOW_SAMPLE_TIME | SPAN_LOG_FLOW);
span_log_set_tag(logging, mc->tag);
memset(mc->amp, 0, sizeof(mc->amp));
mc->total_audio_time = 0;
mc->done = false;
}
time(&start_time);
for (;;)
{
alldone = true;
for (j = 0; j < FAX_MACHINES; j++)
{
mc = &machines[j];
if ((j & 1) == 0 && input_audio_file_name)
{
mc->len = sf_readf_short(input_wave_handle, mc->amp, SAMPLES_PER_CHUNK);
if (mc->len == 0)
break;
}
else
{
mc->len = fax_tx(mc->fax, mc->amp, SAMPLES_PER_CHUNK);
if (mc->awgn)
{
for (k = 0; k < mc->len; k++)
mc->amp[k] = ((int16_t) (mc->amp[k]*signal_scaling)) + awgn(mc->awgn);
}
}
mc->total_audio_time += 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 (mc->len < SAMPLES_PER_CHUNK)
{
memset(mc->amp + mc->len, 0, sizeof(int16_t)*(SAMPLES_PER_CHUNK - mc->len));
mc->len = SAMPLES_PER_CHUNK;
}
}
t30 = fax_get_t30_state(mc->fax);
logging = t30_get_logging_state(t30);
span_log_bump_samples(logging, mc->len);
logging = fax_get_logging_state(mc->fax);
span_log_bump_samples(logging, mc->len);
if (log_audio)
{
for (k = 0; k < mc->len; k++)
out_amp[2*k + j] = mc->amp[k];
}
if (machines[j ^ 1].len < SAMPLES_PER_CHUNK)
memset(machines[j ^ 1].amp + machines[j ^ 1].len, 0, sizeof(int16_t)*(SAMPLES_PER_CHUNK - machines[j ^ 1].len));
t30 = fax_get_t30_state(mc->fax);
#if defined(WITH_SPANDSP_INTERNALS)
if (use_line_hits)
{
/* TODO: This applies very crude line hits. improve it */
if (t30->state == 22)
{
if (++mc->error_delay == 100)
{
fprintf(stderr, "HIT %d!\n", j);
mc->error_delay = 0;
for (k = 0; k < 5; k++)
mc->amp[k] = 0;
}
}
}
if (t30->state == t30_state_to_wreck)
memset(machines[j ^ 1].amp, 0, sizeof(int16_t)*SAMPLES_PER_CHUNK);
#endif
if (fax_rx(mc->fax, machines[j ^ 1].amp, SAMPLES_PER_CHUNK))
break;
if (!mc->done)
alldone = false;
}
if (log_audio)
{
outframes = sf_writef_short(wave_handle, out_amp, SAMPLES_PER_CHUNK);
if (outframes != SAMPLES_PER_CHUNK)
break;
}
if (alldone || j < FAX_MACHINES)
break;
}
time(&end_time);
for (j = 0; j < FAX_MACHINES; j++)
{
mc = &machines[j];
fax_release(mc->fax);
}
if (log_audio)
{
if (sf_close(wave_handle))
{
fprintf(stderr, " Cannot close audio file '%s'\n", OUTPUT_FILE_NAME_WAVE);
exit(2);
}
}
if (input_audio_file_name)
{
if (sf_close(input_wave_handle))
{
fprintf(stderr, " Cannot close audio file '%s'\n", input_audio_file_name);
exit(2);
}
}
printf("Total audio time = %ds (wall time %ds)\n", machines[0].total_audio_time/8000, (int) (end_time - start_time));
return 0;
}
void client_run(int client_socket, char *local_ip, int local_port, char *remote_ip, int remote_port)
{
char sendbuf[RCVBUFSIZE], recvbuf[RCVBUFSIZE], infobuf[RCVBUFSIZE];
struct sockaddr_in addr = {0}, sendaddr = {0};
int read_bytes;
int usock;
int reuse_addr = 1;
fax_state_t fax;
char tmp[512], fn[512], *file_name = "/tmp/test.tiff";
int send_fax = FALSE;
int g711 = 0;
int pcmu = 0;
snprintf(sendbuf, sizeof(sendbuf), "connect\n\n");
send(client_socket, sendbuf, strlen(sendbuf), 0);
if ((read_bytes = recv(client_socket, infobuf, sizeof(infobuf), 0)) < 0) {
die("recv() failed");
}
#if SOCKET2ME_DEBUG
printf("READ [%s]\n", infobuf);
#endif
if (cheezy_get_var(infobuf, "Channel-Read-Codec-Name", tmp, sizeof(tmp))) {
if (!strcasecmp(tmp, "pcmu")) {
g711 = 1;
pcmu = 1;
} else if (!strcasecmp(tmp, "pcma")) {
g711 = 1;
}
}
snprintf(sendbuf, sizeof(sendbuf), "sendmsg\n"
"call-command: unicast\n"
"local-ip: %s\n"
"local-port: %d\n"
"remote-ip: %s\n"
"remote-port: %d\n"
"transport: udp\n"
"%s"
"\n",
local_ip, local_port,
remote_ip, remote_port,
g711 ? "flags: native\n" : ""
);
if (cheezy_get_var(infobuf, "variable_fax_file_name", fn, sizeof(fn))) {
file_name = fn;
}
if (cheezy_get_var(infobuf, "variable_fax_mode", tmp, sizeof(tmp))) {
if (!strcasecmp(tmp, "send")) {
send_fax = TRUE;
}
}
if (cheezy_get_var(infobuf, "variable_fax_preexec", tmp, sizeof(tmp))) {
set_vars(infobuf);
system(tmp);
}
#if SOCKET2ME_DEBUG
printf("SEND: [%s]\n", sendbuf);
#endif
send(client_socket, sendbuf, strlen(sendbuf), 0);
memset(recvbuf, 0, sizeof(recvbuf));
if ((read_bytes = recv(client_socket, recvbuf, sizeof(recvbuf), 0)) < 0) {
die("recv() failed");
}
#if SOCKET2ME_DEBUG
printf("READ [%s]\n", recvbuf);
#endif
if ((usock = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0) {
die("socket() failed");
}
setsockopt(usock, SOL_SOCKET, SO_REUSEADDR, &reuse_addr, sizeof(reuse_addr));
addr.sin_family = AF_INET;
addr.sin_addr.s_addr = htonl(INADDR_ANY);
/*addr.sin_addr.s_addr = inet_addr(remote_ip);*/
addr.sin_port = htons(remote_port);
sendaddr.sin_family = AF_INET;
sendaddr.sin_addr.s_addr = inet_addr(local_ip);
sendaddr.sin_port = htons(local_port);
if (bind(usock, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
die("bind() failed");
}
printf("%s Fax filename: [%s] from %s:%d -> %s:%d\n", send_fax ? "Sending" : "Receiving", file_name, local_ip, local_port, remote_ip, remote_port);
fax_init(&fax, send_fax);
t30_set_local_ident(&fax.t30_state, "Socket 2 ME");
t30_set_header_info(&fax.t30_state, "Socket 2 ME");
if (send_fax) {
t30_set_tx_file(&fax.t30_state, file_name, -1, -1);
} else {
t30_set_rx_file(&fax.t30_state, file_name, -1);
}
t30_set_phase_b_handler(&fax.t30_state, phase_b_handler, NULL);
t30_set_phase_d_handler(&fax.t30_state, phase_d_handler, NULL);
t30_set_phase_e_handler(&fax.t30_state, phase_e_handler, NULL);
t30_set_document_handler(&fax.t30_state, document_handler, NULL);
t30_set_ecm_capability(&fax.t30_state, TRUE);
t30_set_supported_compressions(&fax.t30_state, T30_SUPPORT_T4_1D_COMPRESSION | T30_SUPPORT_T4_2D_COMPRESSION | T30_SUPPORT_T6_COMPRESSION);
t30_set_supported_image_sizes(&fax.t30_state, 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(&fax.t30_state, T30_SUPPORT_STANDARD_RESOLUTION | T30_SUPPORT_FINE_RESOLUTION | T30_SUPPORT_SUPERFINE_RESOLUTION
| T30_SUPPORT_R8_RESOLUTION | T30_SUPPORT_R16_RESOLUTION);
for (;;) {
struct sockaddr_in local_addr = {0};
size_t cliAddrLen = sizeof(local_addr);
unsigned char audiobuf[1024], rawbuf[1024], outbuf[1024];
short *usebuf = NULL;
int tx, tx_bytes, bigger, sample_count;
fd_set ready;
FD_ZERO(&ready);
FD_SET(usock, &ready);
FD_SET(client_socket, &ready);
bigger = usock > client_socket ? usock : client_socket;
select(++bigger, &ready, NULL, NULL, NULL);
if (FD_ISSET(client_socket, &ready)) {
memset(recvbuf, 0, sizeof(recvbuf));
if ((read_bytes = recv(client_socket, recvbuf, sizeof(recvbuf), 0)) < 0) {
die("recv() failed");
}
if (read_bytes == 0) {
break;
}
#if SOCKET2ME_DEBUG
printf("READ [%s]\n", recvbuf);
#endif
}
if (!FD_ISSET(usock, &ready)) {
continue;
}
if ((read_bytes = recvfrom(usock, audiobuf, sizeof(audiobuf), 0, (struct sockaddr *) &local_addr, &cliAddrLen)) < 0) {
die("recvfrom() failed");
}
if (g711) {
int i;
short *rp = (short *) rawbuf;
for (i = 0; i < read_bytes; i++) {
if (pcmu) {
rp[i] = ulaw_to_linear(audiobuf[i]);
} else {
rp[i] = alaw_to_linear(audiobuf[i]);
}
}
usebuf = rp;
sample_count = read_bytes;
} else {
usebuf = (short *) audiobuf;
sample_count = read_bytes / 2;
}
fax_rx(&fax, usebuf, sample_count);
#if SOCKET2ME_DEBUG
printf("Handling client %s:%d %d bytes\n", inet_ntoa(local_addr.sin_addr), ntohs(local_addr.sin_port), read_bytes);
#endif
if ((tx = fax_tx(&fax, (short *)outbuf, sample_count)) < 0) {
printf("Fax Error\n");
break;
} else if (!tx) {
continue;
}
if (g711) {
int i;
short *bp = (short *) outbuf;
for (i = 0; i < tx; i++) {
if (pcmu) {
rawbuf[i] = linear_to_ulaw(bp[i]);
} else {
rawbuf[i] = linear_to_alaw(bp[i]);
}
}
usebuf = (short *) rawbuf;
tx_bytes = tx;
} else {
usebuf = (short *)outbuf;
tx_bytes = tx * 2;
}
cliAddrLen = sizeof(sendaddr);
if (sendto(usock, usebuf, tx_bytes, 0, (struct sockaddr *) &sendaddr, sizeof(sendaddr)) != tx_bytes) {
die("sendto() sent a different number of bytes than expected");
}
}
close(client_socket);
close(usock);
t30_terminate(&fax.t30_state);
fax_release(&fax);
if (cheezy_get_var(infobuf, "variable_fax_postexec", tmp, sizeof(tmp))) {
set_vars(infobuf);
system(tmp);
}
printf("Done\n");
snprintf(sendbuf, sizeof(sendbuf), "hangup\n\n");
send(client_socket, sendbuf, strlen(sendbuf), 0);
}
