SPAN_DECLARE(int) ademco_contactid_sender_tx(ademco_contactid_sender_state_t *s, int16_t amp[], int max_samples)
{
int sample;
int samples;
for (sample = 0; sample < max_samples; sample += samples)
{
switch (s->step)
{
case 0:
if (!s->clear_to_send)
return 0;
s->clear_to_send = false;
s->step++;
s->remaining_samples = ms_to_samples(250);
/* Fall through */
case 1:
samples = (s->remaining_samples > (max_samples - sample)) ? (max_samples - sample) : s->remaining_samples;
vec_zeroi16(&[sample], samples);
s->remaining_samples -= samples;
if (s->remaining_samples > 0)
return samples;
span_log(&s->logging, SPAN_LOG_FLOW, "Pre-send silence finished\n");
s->step++;
break;
case 2:
samples = dtmf_tx(&s->dtmf, &[sample], max_samples - sample);
if (samples == 0)
{
s->clear_to_send = false;
s->step = 0;
return sample;
}
break;
default:
return sample;
}
}
return sample;
}
int main(int argc, char *argv[])
{
dtmf_tx_state_t *gen;
int16_t amp[16384];
int len;
SNDFILE *outhandle;
int add_digits;
if ((outhandle = sf_open_telephony_write(OUTPUT_FILE_NAME, 1)) == NULL)
{
fprintf(stderr, " Cannot open audio file '%s'\n", OUTPUT_FILE_NAME);
exit(2);
}
gen = dtmf_tx_init(NULL, NULL, NULL);
len = dtmf_tx(gen, amp, 16384);
printf("Generated %d samples\n", len);
sf_writef_short(outhandle, amp, len);
if (dtmf_tx_put(gen, "123", -1))
{
printf("Ooops\n");
exit(2);
}
len = dtmf_tx(gen, amp, 16384);
printf("Generated %d samples\n", len);
sf_writef_short(outhandle, amp, len);
if (dtmf_tx_put(gen, "456", -1))
{
printf("Ooops\n");
exit(2);
}
len = dtmf_tx(gen, amp, 160);
printf("Generated %d samples\n", len);
sf_writef_short(outhandle, amp, len);
if (dtmf_tx_put(gen, "789", -1))
{
printf("Ooops\n");
exit(2);
}
len = dtmf_tx(gen, amp, 160);
printf("Generated %d samples\n", len);
sf_writef_short(outhandle, amp, len);
if (dtmf_tx_put(gen, "*#", -1))
{
printf("Ooops\n");
exit(2);
}
len = dtmf_tx(gen, amp, 160);
printf("Generated %d samples\n", len);
sf_writef_short(outhandle, amp, len);
add_digits = 1;
do
{
len = dtmf_tx(gen, amp, 160);
printf("Generated %d samples\n", len);
if (len > 0)
sf_writef_short(outhandle, amp, len);
if (add_digits)
{
if (dtmf_tx_put(gen, "1234567890", -1))
{
printf("Digit buffer full\n");
add_digits = 0;
}
}
}
while (len > 0);
dtmf_tx_init(gen, NULL, NULL);
len = dtmf_tx(gen, amp, 16384);
printf("Generated %d samples\n", len);
sf_writef_short(outhandle, amp, len);
if (dtmf_tx_put(gen, "123", -1))
{
printf("Ooops\n");
exit(2);
}
len = dtmf_tx(gen, amp, 16384);
printf("Generated %d samples\n", len);
sf_writef_short(outhandle, amp, len);
if (dtmf_tx_put(gen, "456", -1))
{
printf("Ooops\n");
exit(2);
}
len = dtmf_tx(gen, amp, 160);
printf("Generated %d samples\n", len);
sf_writef_short(outhandle, amp, len);
if (dtmf_tx_put(gen, "789", -1))
{
printf("Ooops\n");
exit(2);
}
len = dtmf_tx(gen, amp, 160);
printf("Generated %d samples\n", len);
sf_writef_short(outhandle, amp, len);
if (dtmf_tx_put(gen, "0*#", -1))
{
printf("Ooops\n");
exit(2);
}
len = dtmf_tx(gen, amp, 160);
printf("Generated %d samples\n", len);
sf_writef_short(outhandle, amp, len);
if (dtmf_tx_put(gen, "ABCD", -1))
{
printf("Ooops\n");
exit(2);
}
len = dtmf_tx(gen, amp, 160);
printf("Generated %d samples\n", len);
sf_writef_short(outhandle, amp, len);
/* Try modifying the level and length of the digits */
printf("Try different levels and timing\n");
dtmf_tx_set_level(gen, -20, 5);
dtmf_tx_set_timing(gen, 100, 200);
if (dtmf_tx_put(gen, "123", -1))
{
printf("Ooops\n");
exit(2);
}
do
{
len = dtmf_tx(gen, amp, 160);
printf("Generated %d samples\n", len);
if (len > 0)
sf_writef_short(outhandle, amp, len);
}
while (len > 0);
printf("Restore normal levels and timing\n");
dtmf_tx_set_level(gen, -10, 0);
dtmf_tx_set_timing(gen, 50, 55);
if (dtmf_tx_put(gen, "A", -1))
{
printf("Ooops\n");
exit(2);
}
add_digits = TRUE;
do
{
len = dtmf_tx(gen, amp, 160);
printf("Generated %d samples\n", len);
if (len > 0)
sf_writef_short(outhandle, amp, len);
if (add_digits)
{
if (dtmf_tx_put(gen, "1234567890", -1))
{
printf("Digit buffer full\n");
add_digits = FALSE;
}
}
}
while (len > 0);
if (sf_close_telephony(outhandle))
{
fprintf(stderr, " Cannot close audio file '%s'\n", OUTPUT_FILE_NAME);
exit(2);
}
return 0;
}