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; }