int audio_send_digit(struct audio *a, char key)
{
int err = 0;
if (!a)
return EINVAL;
if (key > 0) {
(void)re_printf("send DTMF digit: '%c'\n", key);
err = telev_send(a->telev, telev_digit2code(key), false);
} else if (a->tx.cur_key) {
/* Key release */
(void)re_printf("send DTMF digit end: '%c'\n", a->tx.cur_key);
err = telev_send(a->telev, telev_digit2code(a->tx.cur_key), true);
}
a->tx.cur_key = key;
return err;
}
int test_telev(void)
{
static const char digits[] = "1234567890ABCD*#";
struct telev *tlv = NULL;
struct mbuf *mb;
bool marker, expect_end = false;
char digit;
size_t i;
int err;
mb = mbuf_alloc(512);
if (!mb)
return ENOMEM;
err = telev_alloc(&tlv, 1);
if (err)
goto out;
/* Encode all digits */
for (i=0; i<strlen(digits) && !err; i++) {
digit = telev_digit2code(digits[i]);
err |= telev_send(tlv, digit, false);
err |= telev_send(tlv, digit, true);
}
if (err)
goto out;
while (0 == telev_poll(tlv, &marker, mb))
;
/* Decode all digits */
mb->pos = 0;
i = 0;
while (mbuf_get_left(mb) && i<strlen(digits)) {
int event;
bool end;
if (telev_recv(tlv, mb, &event, &end))
continue;
digit = telev_code2digit(event);
if (digits[i] != digit) {
(void)re_fprintf(stderr, "telev: expect %c, got %c\n",
digits[i], digit);
err = EBADMSG;
break;
}
if (!expect_end != !end) {
err = EBADMSG;
break;
}
expect_end = !end;
if (end)
++i;
}
if (i != strlen(digits))
err = EBADMSG;
out:
mem_deref(tlv);
mem_deref(mb);
return err;
}