int stream_debug(struct re_printf *pf, const struct stream *s)
{
struct sa rrtcp;
int err;
if (!s)
return 0;
err = re_hprintf(pf, " %s dir=%s pt_enc=%d\n", sdp_media_name(s->sdp),
sdp_dir_name(sdp_media_dir(s->sdp)),
s->pt_enc);
sdp_media_raddr_rtcp(s->sdp, &rrtcp);
err |= re_hprintf(pf, " remote: %J/%J\n",
sdp_media_raddr(s->sdp), &rrtcp);
err |= rtp_debug(pf, s->rtp);
err |= jbuf_debug(pf, s->jbuf);
return err;
}
/* TODO: should we check RTP per stream, or should we have the
* check in struct call instead?
*/
static void check_rtp_handler(void *arg)
{
struct stream *strm = arg;
const uint64_t now = tmr_jiffies();
int diff_ms;
tmr_start(&strm->tmr_rtp, RTP_CHECK_INTERVAL,
check_rtp_handler, strm);
/* If no RTP was received at all, check later */
if (!strm->ts_last)
return;
/* We are in sendrecv mode, check when the last RTP packet
* was received.
*/
if (sdp_media_dir(strm->sdp) == SDP_SENDRECV) {
diff_ms = (int)(now - strm->ts_last);
debug("stream: last \"%s\" RTP packet: %d milliseconds\n",
sdp_media_name(strm->sdp), diff_ms);
if (diff_ms > (int)strm->rtp_timeout_ms) {
info("stream: no %s RTP packets received for"
" %d milliseconds\n",
sdp_media_name(strm->sdp), diff_ms);
stream_close(strm, ETIMEDOUT);
}
}
else {
re_printf("check_rtp: not checking (dir=%s)\n",
sdp_dir_name(sdp_media_dir(strm->sdp)));
}
}
static int media_encode(const struct sdp_media *m, struct mbuf *mb, bool offer)
{
enum sdp_bandwidth i;
int err, supc = 0;
bool disabled;
struct le *le;
uint16_t port;
for (le=m->lfmtl.head; le; le=le->next) {
const struct sdp_format *fmt = le->data;
if (fmt->sup)
++supc;
}
if (m->disabled || supc == 0 || (!offer && !sa_port(&m->raddr))) {
disabled = true;
port = 0;
}
else {
disabled = false;
port = sa_port(&m->laddr);
}
err = mbuf_printf(mb, "m=%s %u %s", m->name, port, m->proto);
if (disabled) {
err |= mbuf_write_str(mb, " 0\r\n");
return err;
}
for (le=m->lfmtl.head; le; le=le->next) {
const struct sdp_format *fmt = le->data;
if (!fmt->sup)
continue;
err |= mbuf_printf(mb, " %s", fmt->id);
}
err |= mbuf_write_str(mb, "\r\n");
if (sa_isset(&m->laddr, SA_ADDR)) {
const int ipver = sa_af(&m->laddr) == AF_INET ? 4 : 6;
err |= mbuf_printf(mb, "c=IN IP%d %j\r\n", ipver, &m->laddr);
}
for (i=SDP_BANDWIDTH_MIN; i<SDP_BANDWIDTH_MAX; i++) {
if (m->lbwv[i] < 0)
continue;
err |= mbuf_printf(mb, "b=%s:%i\r\n",
sdp_bandwidth_name(i), m->lbwv[i]);
}
for (le=m->lfmtl.head; le; le=le->next) {
const struct sdp_format *fmt = le->data;
if (!fmt->sup || !str_len(fmt->name))
continue;
err |= mbuf_printf(mb, "a=rtpmap:%s %s/%u",
fmt->id, fmt->name, fmt->srate);
if (fmt->ch > 1)
err |= mbuf_printf(mb, "/%u", fmt->ch);
err |= mbuf_printf(mb, "\r\n");
if (str_len(fmt->params))
err |= mbuf_printf(mb, "a=fmtp:%s %s\r\n",
fmt->id, fmt->params);
}
if (sa_isset(&m->laddr_rtcp, SA_ALL))
err |= mbuf_printf(mb, "a=rtcp:%u IN IP%d %j\r\n",
sa_port(&m->laddr_rtcp),
(AF_INET == sa_af(&m->laddr_rtcp)) ? 4 : 6,
&m->laddr_rtcp);
else if (sa_isset(&m->laddr_rtcp, SA_PORT))
err |= mbuf_printf(mb, "a=rtcp:%u\r\n",
sa_port(&m->laddr_rtcp));
err |= mbuf_printf(mb, "a=%s\r\n",
sdp_dir_name(offer ? m->ldir : m->ldir & m->rdir));
for (le = m->lattrl.head; le; le = le->next)
err |= mbuf_printf(mb, "%H", sdp_attr_print, le->data);
return err;
}